source string | task_type string | in_source_id string | instruction_seed string | gold_standard_solution string | verification_info string | metadata string | problem_id string | _source string |
|---|---|---|---|---|---|---|---|---|
stackexchange | llm_judgeable_groundtruth_similarity | 20229 |
Below is a question asked on the forum linguistics.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm writing something about the Celtic languages of northwestern Europe when the Saxons came to Britain, and described a "continuous but loose-knit group of peopl... | Actually, there are good chances that a Celtic language was spoken in the 6th century in the Iberian Peninsula, not the ones you would expect but a Brittonic one. We know for sure that a group of Britons settled in Galicia in the 6th century, when Galicia was the independent kingdom of the Suevi: a bishop of the Briton... | {} | {'log_upvote_score': 4, 'links': ['https://linguistics.stackexchange.com/questions/20229', 'https://linguistics.stackexchange.com', 'https://linguistics.stackexchange.com/users/9932/']} | jdg_225684 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 102173 |
Below is a question asked on the forum mathoverflow.net. Provide a good and informational response to it like a helpful human would.
Question:
A graph manifold is a closed 3-manifold $M$ that admits a finite collection of disjoint embedded tori $\mathcal{T}$ so that $M \setminus \mathcal{T}$ is a disjoint union of Se... | The answer to your question is almost trivial: if the tori/Klein bottles are required to be $\pi_1$-injective, then the manifold will be a $K(\pi,1)$, so $\pi_2$ will vanish. Also, notice in the case of Seifert-fibered spaces, the universal cover is either $\mathbb{R}^3$ or $S^3$, and thus again $\pi_2=0$. However, the... | {} | {'log_upvote_score': 5, 'links': ['https://mathoverflow.net/questions/102173', 'https://mathoverflow.net', 'https://mathoverflow.net/users/20557/']} | jdg_200333 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 9837594 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am debugging this piece of software for an STM32 embedded system. In one of the functions my programs keeps hitting some sort of breakpoint: SIGTRAP, Trace/breakpoint trap ... | Ok. Long answer:Hardware breakpoints are usually set by writing to some special CPU registers. This is done by gdb. If gdb dies, it can left those installed in CPU.I guess your implementation (of gdb) does not either clear or examine those, when it connects to your target.To locate them, you would need to list the cont... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/9837594', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/707381/']} | jdg_341215 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 150205 |
Below is a question asked on the forum unix.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
Actually I have a file called test1.txt . In that file I have the following five lines: 'test message1' 'test message2' 'test message3' 'test message4' 'test message5' N... | This is what the a command does: sed -e "/test message1/a\\'testing testing'" < data This command will: Queue the lines of text which follow this command (each but the last ending with a \, which are removed from the output) to be output at the end of the current cycle, or when the next input line is read. So in this c... | {} | {'log_upvote_score': 5, 'links': ['https://unix.stackexchange.com/questions/150205', 'https://unix.stackexchange.com', 'https://unix.stackexchange.com/users/61108/']} | jdg_204342 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 21986909 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have a C# WCF webservice which is called by two VB 6 project. The target VB project is sending to the client VB project a multidimensional array. I want to convert the mult... | Usually the solutions presented assume 0-based indices but that's not always the case, mainly if on the client you are dealing with object[,] 's for Microsoft Excel. Here is a solution for any indices: internal static class ExtensionMethods{ internal static T[][] ToJaggedArray<T>(this T[,] twoDimensionalArray) { ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/21986909', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1010984/']} | jdg_228886 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 35088181 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm trying to display several properties from a related entity on a DataGridView in a winforms app. It seems pretty ordinary to me but I'm having trouble finding examples. It... | You can use either of these options: Use DataGridViewComboBoxColumn Add corresponding properties to child entity partial class Shape the query to include properties of navigation property using Linq Use CellFormatting event to get value for sub property bounded columns Show string representation of object by overriding... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/35088181', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/5534321/']} | jdg_300696 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 19175311 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am unable to create a single table using SQLAlchemy. I can create it by calling Base.metadata.create_all(engine) but as the number of table grows, this call takes a long ti... | Above, the declarative_base() callable returns a new base class from which all mapped classes should inherit. When the class definition is completed, a new Table and mapper() will have been generated. The resulting table and mapper are accessible via __table__ and __mapper__ attributes (From here ) Therefore: def bui... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/19175311', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2416534/']} | jdg_257894 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 38769856 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am facing some strange results with integer division in C++. I am trying to calculate this: -2147483648 / -1 . What I get is 3 different results in 3 different scenarios: i... | The literal -2147483648 / -1 is calculated by your compiler as 2147483648 in a data type that is wide enough to hold that value. When the literal is printed out directly, it prints the value correctly. When the literal is stored in res , it is cast to an int . An int appears to be 32 bits wide on your system. The value... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/38769856', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3432735/']} | jdg_276767 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 51873649 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
Hi everyone I try to index with map a json array. But it doesn't work properly. I think my code is not correct. my code : var entireHTMLssssq = lloopmois.map(result, index =... | As far as I know MockHttpServletResponse (Unlike RestTemplate) doesn't have any method which could convert returned JSON to a particular type. So what you could do is use Jackson ObjectMapper to convert JSON string to a particular type Something like this String json = rt.getResponse().getContentAsString();SomeClass so... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/51873649', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/9642714/']} | jdg_330526 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 23478272 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am fetching data using iOS7's new URL request methods, like so: NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[self.baseUrl ... | Put your request code in a method and call it again in a dispatch_async block ;) - (void)requestMethod { NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[self.baseUrl str... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/23478272', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1214667/']} | jdg_329395 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 2759756 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I was wondering if it's possible to do something like this (which doesn't work): select cast( (exists(select * from theTable where theColumn like 'theValue%') as bit) Seems l... | No, you'll have to use a workaround. If you must return a conditional bit 0/1 another way is to: SELECT CAST( CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1 ELSE 0 END AS BIT) Or without the cast: SELECT CASE WHEN EXISTS( SELECT 1 FROM theTable WHERE theColumn LIKE 'the... | {} | {'log_upvote_score': 9, 'links': ['https://Stackoverflow.com/questions/2759756', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/30946/']} | jdg_171366 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 6050082 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have a base Controller ApplicationController that needs to grab the URL Host and do some processing before the child controllers are fired. Since controller constructors ar... | Assuming that constructors are the first instance method ever to be fired in a .NET class, that shouldn't come as a surprise and is not really something MVC specific. It's more how the .NET framework works. The MVC framework needs to first instantiate a controller and then initialize it => it calls the constructor firs... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/6050082', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/368593/']} | jdg_365726 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 3967193 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
In a group of eight friends, everyone is of different age. Everyone decided to take a seat by an eight-person round table. The youngest of them sat at seat 1. Later they... | Once the youngest has sat, the other seven people form a line of alternating age comparisons: $$1<A>B<C>D<E>F<G>1$$ It is well-known that the number of ways to arrange the other seven people in such a line is given by the up/down number $A_7=272$ . The Wikipedia page linked describes a simple recurrence for these numbe... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/3967193', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/865075/']} | jdg_208230 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 109813 |
Below is a question asked on the forum mathoverflow.net. Provide a good and informational response to it like a helpful human would.
Question:
Let $X$ be a Kahler manifold and $Z\subset X$ be a smooth hypersurface. How to compute the Hodge diamond of the double covering $Y\to X$ ramified over $Z$? (And what I have to... | The answer goes back to Esnault and Viehweg:$$H^q(Y,\Omega_Y^p)= H^q(X,\Omega_X^p)\oplus H^q(X,\Omega_X^p(\log Z)\otimes L^{-1})$$where $L$ is the anti-invariant part of the direct image of $O_Y$ to $X$ under thenatural $\mathbb{Z}/2$ action. | {} | {'log_upvote_score': 4, 'links': ['https://mathoverflow.net/questions/109813', 'https://mathoverflow.net', 'https://mathoverflow.net/users/9833/']} | jdg_135306 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 9146163 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
Does jQuery 1.5.1 support attribute selectors in the closest method? Given the structure below, el represents the checkbox with the value 513, and I'm trying to reach up and ... | The .closest() method does support attribute selectors the same as any other jQuery method (although I don't know about the specific version of jQuery you mentioned), but the problem here is that .closest() doesn't just look in the general vicinity, it goes up through the ancestors. You are trying to select an input el... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/9146163', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/352552/']} | jdg_83685 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 534745 |
Below is a question asked on the forum unix.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I want to delete all the words before a pattern for example: I want to delete all the words before STAC . Input: asdasddasdddSTACasdas Output: STACasdas I have this code... | sed works linewise, that's why your try will not work. So how to do it with sed ? Define an address range, starting from the STAC line ( /^STAC$/ ) to the end of the file ( $ ). Those should be printed, so everything else ( ! ) should get d eleted: sed -i '/^STAC$/,$!d' myfile | {} | {'log_upvote_score': 4, 'links': ['https://unix.stackexchange.com/questions/534745', 'https://unix.stackexchange.com', 'https://unix.stackexchange.com/users/366266/']} | jdg_260378 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 23917189 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I want to send an HTTP request to some REST service from Google drive spreadsheet. Is this possible?
Now provide the response and nothing else.
| Using Google Apps Script, you can make HTTP requests to external APIs from inside Google Docs/Sheets/etc. using the UrlFetchApp class : var url = 'https://gdata.youtube.com/feeds/api/videos?' + 'q=skateboarding+dog' + '&start-index=21' + '&max-results=10' + '&v=2';var response = UrlFetchApp.fetch(url);Logge... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/23917189', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/171950/']} | jdg_125892 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 3586267 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I am trying to gain some insight into how one understands proofs that can be generically described as fitting this mold: Let $x$ be some object that has a specific list ... | The exact same strategy works for the reformulated statement, since they're equivalent. If you want to prove $$\forall x(\phi(x)\implies \exists y,\phi'(xy))$$ what do you do? Pick an arbitrary $x$ such that $\phi(x)$ holds and then try to find a $y$ such that $\phi'(x,y)$ holds, or show that the non-existence of suc... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/3586267', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/544640/']} | jdg_96256 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 23727 |
Below is a question asked on the forum earthscience.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
As the Earth's axis is inclined, during summer in the northern hemisphere places in the north are exposed to the Sun's rays for longer, so days are longer during... | The image below (apparently from "physicalgeography.net" is somewhat instructive: Notice that even in the middle of summer, India (at about 30 °N) still gets slightly more sun than the Britain (at 60 °N). That's because although the days are longer in Britain, the sun is lower in the sky and so its heat is spread out o... | {} | {'log_upvote_score': 5, 'links': ['https://earthscience.stackexchange.com/questions/23727', 'https://earthscience.stackexchange.com', 'https://earthscience.stackexchange.com/users/26703/']} | jdg_87308 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 9593287 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
In gcc this works fine. The code goes something like: unsigned char b[50] = "\xda\xd1 ... \x0"; //some shellcode with terminating \x0( (void(*)())b )(); //cast b to function ... | A proper debugger will tell you what's going wrong. I can only guess that your code is causing an access violation because the buffer you want to jump to is not executable. Probably you're on a default- DEP -enabled system like Vista or 7, so you have to make sure that your shellcode is executable. To do that, first us... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/9593287', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1253415/']} | jdg_273205 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 18085858 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am trying to setup vim for compiling and runing c and c++ programs right inside the editor, but these don't seem to work: autocmd! filetype *.c nnoremap <leader>cc :... | The FileType autocommand uses the filetype not the filename to match against. You can instead use c and cpp. See :h FileType . However your problems do not end there: These are global mappings. There for open up a c file and the mappings change. Open up a cpp file and the mappings change no matter what buffer you are i... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/18085858', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/562222/']} | jdg_114008 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 28892351 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
The Rust tutorial, and now book claim there is a difference between while true and loop , but that it isn't super important to understand at this stage. If you need an infini... | This was answered on Reddit . As you said, the compiler could special-case while true , but it doesn't. Since it doesn't, the compiler doesn't semantically infer that an undeclared variable that's set inside a while true loop must always be initialized if you break out of the loop, while it does for a loop loop: It als... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/28892351', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2343847/']} | jdg_134926 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 217358 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
What's the method to find the base of any given number? E.g. find $r$ such that $(121)_r=(144)_8$, where $r$ and $8$ are the bases. So how do I find the value of $r$?
N... | By definition $$144_8=1\cdot8^2+4\cdot8^1+4\cdot8^0=64+32+4=100\;,$$ and $$121_r=1\cdot r^2+2\cdot r^1+1\cdot r^0=r^2+2r+1\;.$$ To find $r$, just solve the quadratic equation $$r^2+2r+1=100$$ by whatever method you find most convenient; the slickest method is probably to notice that $r^2+2r+1=(r+1)^2$, so $(r+1)^2=100=... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/217358', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/45369/']} | jdg_266433 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 24514 |
Below is a question asked on the forum stats.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I have multiclass unbalanced data (4 class with 15% 25% 45% 15% data in each class). Which method is good for classification of such data- SVM or ANN? UPDATE- Let me ma... | The no-free lunch theorems suggest there is no classifier that is a priori superior to any other, and the choice of classifier depends on the nature of the particular data set. I wouldn't cmomit myself to a choice of classifier and would instead evaluate several methods. The classes are only mildly imbalanced, so I su... | {} | {'log_upvote_score': 5, 'links': ['https://stats.stackexchange.com/questions/24514', 'https://stats.stackexchange.com', 'https://stats.stackexchange.com/users/8924/']} | jdg_277878 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 11373130 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have DirectoryPath: data/data/in.com.jotSmart/app_custom/folderName/FileName which is stored as a String in ArrayList Like ArrayList<String> a;a.add("data/data/in.com.jotSm... | f.getParent() Returns the pathname string of this abstract pathname's parent, or null if this pathname does not name a parent directory. For example File f = new File("/home/jigar/Desktop/1.txt"); System.out.println(f.getParent());// /home/jigar/Desktop System.out.println(f.getName()); //1.txt Update: (based on ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/11373130', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/806106/']} | jdg_104345 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 24127237 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
Given the following data.frame d <- rep(c("a", "b"), each=5)l <- rep(1:5, 2) v <- 1:10df <- data.frame(d=d, l=l, v=v*v)df d l v1 a 1 12 a 2 43 a 3 94 a 4 ... | I guess this is the dplyr equivalent to @jlhoward's data.table solution: df %>% group_by(l) %>% mutate(e = v[d == "b"] - v[d == "a"]) Edit after comment by OP: If you want to use a custom function, here's a possible way: myfunc <- function(x) { with(x, v[d == "b"] - v[d == "a"])}test %>% group_by(l) %>% do(data.fr... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/24127237', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1885741/']} | jdg_168027 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 42115088 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
Although there are tens of questions about remove_if + erase for vector.I couldn't find what is the performance of such action.When I write: myVector.erase(remove_if(myVector... | Consider this vector: |0|1|2|3|4|5|6|7|8|9| We use remove_if to remove all elements that are multiples of 4: std::remove_if(v.begin(), v.end(), [](auto i){ return i != 0 && !(i%4); }); This starts iterating through the vector with an iterator X until it finds an element where the predicate returns true: |0|1|2|3|4|5|6|... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/42115088', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/443878/']} | jdg_215307 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 1028798 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
Hartshorne, Algebraic Geometry , Chapter V, Lemma 1.3, reads (in part): Throughout this chapter, a surface will mean a nonsingular projective surface over an algebraical... | Note that $$0 \to \mathcal{O}_X(-D) \to \mathcal{O}_X \to \mathcal{O}_D \to 0$$ tensor by $\mathcal{O}_C$ is just $$0\to {\mathcal Tor}_1( \mathcal{O}_D,\mathcal{O}_C)\to \mathscr{L}(-D) \otimes \mathcal{O}_C \to \mathcal{O}_C \to \mathcal{O}_{C \cap D} \to 0$$ since $\mathcal{O}_X$ is flat. Now ${\mathcal Tor}_1( \mat... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/1028798', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/3296/']} | jdg_113884 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 215085 |
Below is a question asked on the forum stats.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
The number of accidents per day is a Poisson random variable with parameter $\lambda$, on 10 randomly chosen days the number of accidents were observed as 1,0,1,1,2,0,2... | If $X\sim \text{Pois}(\lambda)$, then $P(X = k) = \lambda^ke^{-\lambda}/k!$, for $k\geq 0$. It is hard to compute $$E[X^n] = \sum_{k\geq 0} k^n P(X = k)\text{,}$$but is is much easier to compute $E[X^{\underline{n}}]$, where $X^{\underline{n}} = X(X - 1)\cdots (X - n + 1)$:$$E[X^\underline{n}]=\lambda^n\text{.}$$You ca... | {} | {'log_upvote_score': 4, 'links': ['https://stats.stackexchange.com/questions/215085', 'https://stats.stackexchange.com', 'https://stats.stackexchange.com/users/117161/']} | jdg_206575 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 20268962 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am currently doing a parallax website theme. The background images need to be attached as fixed for certain 'div's and 'section's to avoid jquery indulging in everything. T... | This has been a very common unsolved mystery. Recently I had the same problem, and '-webkit-backface-visibility: hidden', proved to be less than useless (on my 'fixed' attached background), since the background just disappeared when it was set. ( Additional Info: the reason is that when the background is set as fixed, ... | {} | {'log_upvote_score': 7, 'links': ['https://Stackoverflow.com/questions/20268962', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3046322/']} | jdg_108381 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 9090204 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have a column date in table as: create_table "test", :force => true do |t| t.date "day"end I want to set current date as default value for this column.I try as below: ... | You can pass a lambda for dynamic initializers. create_table "test", :force => true do |t| t.date "day", default: -> { 'CURRENT_DATE' }end Old answer Rails does not support dynamic default values in migrations.Whatever is in your migration during its execution will be set at the DB level and will stay that way until ... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/9090204', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1168396/']} | jdg_228340 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 7584 |
Below is a question asked on the forum physics.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
If a radioactive material takes a very long time to decay, how is its half life measured or calculated? Do we have to actually observe the radioactive material for a ... | No, one doesn't need to measure the material for years - or even millions or billions of years. It's enough to watch it for a few minutes (for time $t$) and count the number of atoms $\Delta N$ (convention: a positive number) that have decayed. The lifetime $T$ is calculated from$$ \exp(-t/T) = \frac{N - \Delta N}{N}$$... | {} | {'log_upvote_score': 6, 'links': ['https://physics.stackexchange.com/questions/7584', 'https://physics.stackexchange.com', 'https://physics.stackexchange.com/users/2766/']} | jdg_206909 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 1973256 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
Assuming the axiom of choice, it can be shown that every infinite set contains a countable subset.Also, it is my understanding that the proof of this statement requires ... | The issue is that induction only tells you that something is true for every finite integer. For example, by induction we can prove that every natural number $n$ has exactly $n$ predecessors ($0$ is a natural number). Does that mean that there exists a natural number with infinitely many predecessors? No. It does not. S... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/1973256', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/379789/']} | jdg_312329 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 285348 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
$\mathrm{Re}(i) = 0$, but the fourier transform of $f(x) = e^{-ix^2}$ is $g(\alpha) = \sqrt{\pi\over i}\times e^{i\alpha^2 \over 4}$, is it not? Is there an easy to show... | Not sure of a textbook, but I can tell you that a simple way to show that $$\int_{-\infty}^{\infty} dx \: e^{-i x^2} = \sqrt{\frac{\pi}{i}} = \sqrt{\pi} e^{-i \frac{\pi}{4}} $$ is to consider the integral $$\oint_{C_R} dz \: e^{-z^2} $$ where $C_R$ consists of the interval $[0,R]$ along the $\Re{z}$ axis, a circular a... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/285348', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/34371/']} | jdg_91070 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 2911147 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
Let $G=\langle a,b \mid baba^{-1}=1\rangle$. Show that the subgroup generated by $a$ is infinite. My attempt Suppose $\langle a\rangle$ is finite so $a^k = 1$ for some ... | Hint: consider the homomorphism $f$ from the free group $F = \langle x, y \rangle$ to the free group $H = \langle z \rangle$ that maps $x$ to $z$ and $y$ to $1$. The element $yxyx^{-1}$ lies in the kernel of $f$, so $f$ factors as $h \circ g$, where $g : F \to G$ and $h : G \to H$ are homomorphisms with $g(x) = a$, $g(... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/2911147', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/221486/']} | jdg_210202 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 2466622 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm a teacher(instructor) of CS in the university. The course is based on Cormen and Knuth and students program algorithms in C++. But sometimes it is good to show how an alg... | It is better to familiarize students with Qt, as Qt is actually C++. C# is a completely different beast, and if you use C#, you will very likely get your students confused about what things are Microsoft- or C#-specific vs. what is actually defined in the ISO C++ standard, whereas this will be more obvious with just C+... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/2466622', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/217786/']} | jdg_171466 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 22525666 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have to upload a file from my site yet cnt seem to get it working with drop wizard. Here is the form from my site. <form enctype="multipart/form-data" method="POST" action=... | You could do the saving to the server in lesser number of lines using nio java.nio.file.Path outputPath = FileSystems.getDefault().getPath(<upload-folder-on-server>, fileName);Files.copy(fileInputStream, outputPath); Also, if you're using 0.7.0-rc2, you will need this dependency in your pom.xml <dependency><groupId>com... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/22525666', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3298624/']} | jdg_115265 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 32769929 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
How to convert a 4-bytes array into the corresponding Int? let array: [UInt8] ==> let value : Int Example: Input: \0\0\0\x0e Output: 14 Some code I found on the internet that... | There are two problems: Int is a 64-bit integer on 64-bit platforms, your input datahas only 32-bit. Int uses a little-endian representation on all current Swift platforms,your input is big-endian. That being said the following would work: let array : [UInt8] = [0, 0, 0, 0x0E]var value : UInt32 = 0let data = NSData(byt... | {} | {'log_upvote_score': 7, 'links': ['https://Stackoverflow.com/questions/32769929', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2096808/']} | jdg_203689 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 52275312 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
How do I mock axios that export as default function? I have the api helper that generalizes api request with axios() api.js export const callApi = (endpoint, method, data = {... | You cannot use jest.spyOn(axios, 'default') when you call axios directly (no default ). Changing your implementation in api.js to be axios.default(...args) makes the test pass. A potential change you can make is to use jest.mock('axios') instead of using jest.spyOn . import axios from 'axios';import { callApi } from '.... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/52275312', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/4572081/']} | jdg_199861 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 11920490 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I wrote a simple app in Java that takes a list of paths and generates a file with all the file paths under that original list. If I have paths.txt that has: c:\folder1\c:\fol... | Here is a multiprocessing solution: from multiprocessing.pool import Poolfrom multiprocessing import JoinableQueue as Queueimport osdef explore_path(path): directories = [] nondirectories = [] for filename in os.listdir(path): fullname = os.path.join(path, filename) if os.path.isdir(fullname): ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/11920490', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1251654/']} | jdg_274229 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 25069037 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
So i have a simple app, just a menu with a few buttons, when a button is clicked you are brought to a new page. The page has a button, which when clicked, keeps changing its ... | There actually is a way to do this, of course! I just hadn't thought it through thoroughly enough. I can just return a 'proxy' function and trap the arguments in there: var test = { doSomething: function() { console.log( arguments.length ); }};var testProxy = new Proxy( test, { get: function( target, pr... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/25069037', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2877123/']} | jdg_111926 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 25894509 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm getting the following error when trying to execute statemet.executeUpdate() in my code: Local variable statement defined in an enclosing scope must be final or effectivel... | You have a scope problem indeed, because statement is a local method variable defined here: protected void createContents() { ... Statement statement = null; // local variable ... btnInsert.addMouseListener(new MouseAdapter() { // anonymous inner class @Override public void mouseDown(MouseEve... | {} | {'log_upvote_score': 8, 'links': ['https://Stackoverflow.com/questions/25894509', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/4043524/']} | jdg_377210 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 16959539 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm just looking for what it is that sets Self apart from Smalltalk. This isn't supposed to be a Gorilla vs Shark question. I'm not looking for reasons one is better, I'm jus... | Classes and Prototypes The most distinct difference between Self and Smalltalk is that Self does not have the notion of Classes . There is no “ is an instance of ” relation between an object and a class.Self rather has been one of the first prototypical object-oriented language, and in this respect a precursor to JavaS... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/16959539', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/877603/']} | jdg_252749 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 154200 |
Below is a question asked on the forum mathoverflow.net. Provide a good and informational response to it like a helpful human would.
Question:
${\bf Question:}$ We can write $U(N)\approx \prod_{k=1}^ N S^{2N-1} $ where "$\approx$" means "locally equal to", $S^m$ is $m-$ sphere and $U(N)$ is the unitary group of dimen... | That is definitely not true. In particular, $H^2(\text{Gr}(k,\mathbb{C}^n),\mathbb{Z})$ is isomorphic to $\mathbb{Z}$ for every pair of integers $n>1$ and $1<k<n$. Yet, by Künneth, $H^2(S^7\times S^5,\mathbb{Z})$ vanishes. Edit. Your second guess is still false, for almost precisely the same reason as the first. If ... | {} | {'log_upvote_score': 4, 'links': ['https://mathoverflow.net/questions/154200', 'https://mathoverflow.net', 'https://mathoverflow.net/users/35615/']} | jdg_134099 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 305605 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm writing a simple .bat file and I've run into some weird behavior. There are a couple places where I have to do a simple if/else, but the code inside the blocks don't see... | You are running into the problem of cmd's static variable expansion. The MODE variable is only evaluated once. You can see this if you omit the @echo off line. From the set /? documentation: Finally, support for delayed environment variable expansion has been added. This support is always disabled by default, but ma... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/305605', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1409/']} | jdg_195285 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 28448698 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I want to create a view that looks like this: I figure what I need is a uiview with some sort of mask, I can make a mask in the shape of a circle using a UIBezierpath, howeve... | Updated again for Swift 4 & removed a few items to make the code tighter. Please note that maskLayer.fillRule is set differently between Swift 4 and Swift 4.2. func createOverlay(frame: CGRect, xOffset: CGFloat, yOffset: CGFloat, radius: CGFloat) -> UIView { // S... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/28448698', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3795556/']} | jdg_215200 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 14697232 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm going crazy trying to understand why I can show tooltips on regular HTML elements, but not on D3-generated SVGs: http://jsfiddle.net/nachocab/eQmYX/5/ What am I doing wro... | The problem was that the tooltip that Bootstrap v2.2.2 generates is a <div> that was getting inserted inside the <svg> , which made the browser not render it. I ended up using the latest development version of Bootstrap Tooltip , which adds a new parameter to determine the container of the tooltip. Now I can do: $(".my... | {} | {'log_upvote_score': 7, 'links': ['https://Stackoverflow.com/questions/14697232', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/355567/']} | jdg_147224 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 3511027 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm currently implementing the Factory design pattern in Python and I have a few questions. Is there any way to prevent the direct instantiation of the actual concrete classe... | Don't expose the class (for example make it private __MyClass , or obvious that you don't want it used directly _MyClass ). This way it can only be instantiated via the factory function. Perhaps you should review the use of keyword arguments, and inheritance. It sounds like you may be overlooking these, which will gene... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/3511027', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/342346/']} | jdg_288501 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 50916 |
Below is a question asked on the forum networkengineering.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
What happens when the original destination IP address of a packet was reassigned to some other device(if the original device disconnects) while the packet ... | As they say, timing is everything. Because a packet can travel around the world in just a few tens of milliseconds, what happens depends on exact timing. Assuming the new device is on the same network, the last hop router will forward the packet according to its ARP table. If the router has not been able to update its... | {} | {'log_upvote_score': 4, 'links': ['https://networkengineering.stackexchange.com/questions/50916', 'https://networkengineering.stackexchange.com', 'https://networkengineering.stackexchange.com/users/47783/']} | jdg_210142 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 466999 |
Below is a question asked on the forum unix.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I've been seeing this in a lot of docker-entrypoint.sh scripts recently, and can't find an explanation online. My first thoughts are that it is something to do with sign... | The "$@" bit will expand to the list of positional parameters (usually the command line arguments), individually quoted to avoid word splitting and filename generation ("globbing"). The exec will replace the current process with the process resulting from executing its argument. In short, exec "$@" will run the command... | {} | {'log_upvote_score': 5, 'links': ['https://unix.stackexchange.com/questions/466999', 'https://unix.stackexchange.com', 'https://unix.stackexchange.com/users/233811/']} | jdg_242116 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 14564813 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I want to convert an integer number to a character array in C. Input: int num = 221234; The result is equivalent to: char arr[6];arr[0] = '2';arr[1] = '2';arr[2] = '1';arr[3]... | Make use of the log10 function to determine the number of digits and do like below: char * toArray(int number){ int n = log10(number) + 1; int i; char *numberArray = calloc(n, sizeof(char)); for (i = n-1; i >= 0; --i, number /= 10) { numberArray[i] = (number % 10) + '0'; } return numberArray... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/14564813', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1323712/']} | jdg_313681 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 23922936 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I need to hide the edges that are displayed in a box primitive using ThreeJS. These only are drawn when I put a texture on the faces. I've tried with many options like wirefr... | From the documentation , the expected redirect path can match a regex: expect(response).to redirect_to %r(\Ahttp://example.com) To verify the redirect location's query string seems a little bit more convoluted. You have access to the response's location, so you should be able to do this: response.location# => http://ex... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/23922936', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3561318/']} | jdg_241646 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 5477965 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I've enabled sorting in JTable with setAutoCreateRowSorter method. Mouse clicks on the column headers will switch between ascending and descending order, but I would like to ... | The mapping of a mouse click to changing the sort state is implemented in BasicTableHeaderUI and happens exclusively via the RowSorter's toggleSortOrder(columnIndex). It's default behaviour is to switch UNSORTED --> ASCENDING --> DESCENDING --> ASCENDING -- that is, no way back into the UNSORTED. If the requirement is ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/5477965', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/522535/']} | jdg_256247 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 13269546 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have a big 'Log in' button on my app. When the user taps this button, I want to replace the text with 'Logging in...', align it to the left instead of center and put a spin... | You can create your own button using a RelativeLayout containing a TextView and an ImageView. <RelativeLayout android:id="@+id/login" android:layout_width="wrap_content" android:layout_height="wrap_content" onClick="[yourLoginMethod]" > <TextView android:id="@+id/login_text" android:layout_width="wra... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/13269546', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/315386/']} | jdg_109031 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 44585909 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am currently digging into Hyperledger Fabric and I can't get stuff started with the Java SDK (talking about 1.0.0-beta here). Is there a working example starting from conne... | You can take a look at the following - Java SDK for Hyperledger Fabric 2.2 . In this, there are two files given in the folder "fabric-sdk-java/src/test/java/org/hyperledger/fabric/sdkintegration/" ==> End2endAndBackAgainIT.java, End2endIT.java. This can help. For a demonstration, refer to Youtube channel video: End to ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/44585909', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3996393/']} | jdg_370415 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 2277185 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
Using the following Sinatra app get '/app' do content_type :json {"params" => params}.to_jsonend Invoking: /app?param1=one¶m2=two¶m2=alt Gives the following result:... | I believe by default params of the same name will be overwritten by the param that was processed last. You could either setup params2 as an array of sorts ...¶m2[]=two¶m2[]=alt Or parse the query string vs the Sinatra provided params hash. | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/2277185', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/127044/']} | jdg_207086 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 20302 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
My situation is as follows: I have a symmetric positive semi-definite matrix L (the Laplacian matrix of a graph) and a diagonal matrix S with positive entries $s_i$. The... | Let $\mu_i$ be the eigenvalues of $L S^{-1}$. Then $(\lambda_i, \mu_i, s_i)$ obey the multiplicative version of Horn's inequalities . The most basic of these, if $\lambda_1 \geq \lambda_2 \geq \cdots \geq \lambda_n$ and $s_1^{-1} \geq \cdots \geq s_n^{-1}$ and $\mu_1 \geq \mu_2 \geq \cdots \geq \mu_n$ is that $$\mu_{i+... | {} | {'log_upvote_score': 5, 'links': ['https://math.stackexchange.com/questions/20302', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/4171/']} | jdg_253840 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 64880 |
Below is a question asked on the forum stats.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
A bit like a box plot. I mean not necessarily the standard upper confidence interval, lower confidence interval, mean, and data range-showing box plots, but I mean like... | Look if this helps you. R solution: par(mfrow=c(2,1)) # to stack the charts on column#Dataset 1upperlimit = c(10,12,8,14)lowerlimit = c(5,9,4,7)mean = c(8,10,6,12)df = data.frame(cbind(upperlimit,lowerlimit,mean))plot(df$mean, ylim = c(0,30), xlim = c(1,4))install.packages("plotrix")require(plotrix)plotCI(df$mean,y=NUL... | {} | {'log_upvote_score': 4, 'links': ['https://stats.stackexchange.com/questions/64880', 'https://stats.stackexchange.com', 'https://stats.stackexchange.com/users/28231/']} | jdg_115829 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 3209522 |
Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
Q: a fair dice is rolled 5 times. Find the probability that a score of 6 is recorded for exactly 2 of the rolls of the dice. 5 rolls seems too much to do a tree-diagram ... | Knowing the answer it's not that difficult to get it another way. Let $y = \cos 2x$ . We have $\sin^2 x = \frac{1-y}{2}$ , $\cos^2 x =\frac{1+y}{2}$ . Then \begin{align} \left(\sin^2 x + \frac{1}{\sin^2 x}\right)^2 + \left(\cos^2 x + \frac{1}{\cos^2 x}\right)^2 &= \left(\frac{1-y}{2} + \frac{2}{1-y}\right)^2 + \left(\f... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/3209522', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/-1/']} | jdg_247535 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum unix.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
Does systemd still have the concept of runlevels? For example is it pointless to use telinit <number> ?
Now provide the response and nothing else.
| SystemD Run-Level Low-Down Within the SystemD(aemon), runlevels are exposed as "Targets." The concept is still there, but the workflow to produce the desired result for your requirement is different. The attached should clarify this issue. How do I change the current runlevel? $ systemctl isolate runlevelX.target How d... | {} | {'log_upvote_score': 5, 'links': ['https://unix.stackexchange.com/questions/158872', 'https://unix.stackexchange.com', 'https://unix.stackexchange.com/users/72520/']} | jdg_193630 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am planning to rename a branch in my git repository. I found out that the easy way to do that is to make a new branch from that branch and give it the desired name. After t... | What happens? nothing. If you create a branch where another is, you can "delete" that other branch without losing anything. A branch (HEAD) is just a pointer to a commit. As long as those commits are referenced by a branch HEAD (or are part of the branch HEAD ancestors), they aren't lost. And even if they are no longer... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/19380840', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1444019/']} | jdg_239153 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I googled around on how to pass mvc model to knockoutjs and it seems there are two ways: Using @Html.Raw(Json.Encode(Model)) Using $.get or $.ajax Which of the ways is a best... | I've successfully used several approaches. In a strongly typed Razor view, you can write the JavaScript ViewModel object like you would any other HTML, inserting the Model elements as you go. I find this klunky as Razor and JS don't play well together with Visual Studio and Intellisense, but even with a bunch of red s... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/11628938', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/806274/']} | jdg_180038 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I have the following question and cannot seem to overcome how to contend with equations using $z$ and $\bar z$ together. For example, the below problem: Find the value o... | Hint: Let $z = x + iy$ , for $x,y \in \mathbb{R}$ . Consequently, $\bar{z} = x - iy$ . Make these substitutions into your equation and isolate all of the $x$ and $y$ terms on one side, trying to make it "look" like a number in that form above (I really don't know how else to describe it, my example below will be more i... | {} | {'log_upvote_score': 5, 'links': ['https://math.stackexchange.com/questions/3054472', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/629893/']} | jdg_304272 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I made an application which approaches Pi by throwing pseudo-random "darts" on a digital dartboard. Each dart is displayed by a black pixel. Just out of pure interest I ... | When the number of pixels and the number of darts are equal, this problem is very simple. In the first throw, you can throw anywhere; in the second throw, you must throw somewhere other than where the first throw was; in the third throw, you must throw somewhere other than where the first two throws were; etc. So assum... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/1518221', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/287981/']} | jdg_93900 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
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Where is the uninitialised value in the below code ? #!/usr/bin/perluse warnings;my @sites = (undef, "a", "b");my $sitecount = 1;my $url;while (($url = $sites[$sitecount]) ne... | You can't use undef in a string comparison without a warning. if ("a" ne undef) { ... } will raise a warning. If you want to test if a variable is defined or not, use: if (defined $var) { ... } Comments about the original question: That's a strange way to iterate over an array. The more usual way of doing this would be... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/8770301', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1087848/']} | jdg_112101 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
How to solve the Integral $\int{\frac{1}{\sqrt{1-\sqrt{4-x}}}}$dx with steps I have tried to make the substitution $\frac{du}{dx}=4-x$ but it seems that there is no con... | Considering $$I=\int{\frac{dx}{\sqrt{1-\sqrt{4-x}}}} $$ first let $$\sqrt{4-x}=t^2\implies x=4-t^4 \implies dx=-4t^3\,dt$$ making $$I=-4\int \frac{ t^3}{\sqrt{1-t^2}}\,dt$$ Now, use $$t=\sin(y)\implies dt=\cos(y)\,dy$$ making $$I=-4\int \sin^3(y)\,dy=4\int (1-\cos^2(y))\, d(\cos(y))$$ Just finish ! | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/2370851', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/180307/']} | jdg_342173 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I think the answer is $y = \left( \frac{n \cdot \ln(x)}{W(n \cdot \ln(x))} \right)^{\frac{1}{n}}$, seems tricky. I'm a noob!
Now provide the response and nothing else.
| Let $$h(x)=f^2(x) + 5f(x) -g^2(x) -5g(x)$$Since $f,g$ are continuous, there are $t_1,t_2\in [0,1]$ such that $f(t_1)=\sup_{x\in[0,1]}{f(x)}$ and $g(t_2)=\sup_{x\in[0,1]}{g(x)}$. If $t_1=t_2$, then $h(t_1)=0$, i.e. $f^2(t_1) + 5f(t_1) = g^2(t_1) +5g(t_1)$. If $t_1\ne t_2$, assume $t_1<t_2$ and f, g are not constant, the... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/1703702', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/323509/']} | jdg_357462 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
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I have this piece of code int a = 1;while(1) { a<<=1; cout<<a<<endl;} In the output, I get ..5368709121073741824-214748364800 Why am I not reaching INT_MAX? and what is... | You have a signed int, so numbers are in two's complement. This is what happens 00..01 = 100..10 = 2[...]01..00 = 107374182410..00 = -2147483648 // Highest bit to one means -01..11 - 1 = -(2^31)00..00 = 0 You cannot reach INT_MAX, at most you will have 2^30 . As pointed out in the comments, c++ standard does not enforc... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/21512393', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/489669/']} | jdg_206882 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
By looking at an integral and bounding the error?
Now provide the response and nothing else.
| This was an interesting challenge, to try and come up with an estimate for this sum in an elementary way. The estimate I got was $$1 + \sqrt{2} + \dots + \sqrt{n} \sim \frac{2}{3}n^{3/2} + \frac{\sqrt{n}}{2} + C$$ for some constant $C$ which appears to be close to $-0.207$ (which I guess will be $\zeta(-1/2)$). (By $a_... | {} | {'log_upvote_score': 5, 'links': ['https://math.stackexchange.com/questions/5676', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/1838/']} | jdg_154879 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
The plausible looking "identity" $$\sin(\frac{\pi}{51})+\cos(\frac{\pi}{74})=\frac{3}{2\sqrt 2}$$ is not true, but it is close indeed: $$LHS=1.0606\color{blue}{598...}$$... | First note that $[\mathbb{Q}(\sin\tfrac{\pi}{51}):\mathbb{Q}]=32$ so $[\mathbb{Q}(\sin\tfrac{\pi}{51}, \sqrt{2}):\mathbb{Q}]\in\{32,64\}.$ Now $[\mathbb{Q}(\cos\tfrac{\pi}{74}):\mathbb{Q}]=36$ and since $36\not\mid 64$ we conclude that $\cos\tfrac{\pi}{74}\not\in\mathbb{Q}(\sin\tfrac{\pi}{51}, \sqrt{2})$ and in particu... | {} | {'log_upvote_score': 5, 'links': ['https://math.stackexchange.com/questions/907498', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/-1/']} | jdg_370515 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
With normal instance methods, local variables are thread safe. If I have the following in a static method: int i = 0;i += 3; Would this be thread-safe? Is there any catch? Al... | If the lines you posted are inside the method, then there's no reason why it shouldn't be threadsafe. The threads aren't interacting in any way - each thread sees a different i . The catch comes if you try to share the value of i between threads, for example by making i a static field. Then it's possible to get a race ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/2314829', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/32484/']} | jdg_118702 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
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There are multiple financial products with slight difference, each requires basic personal information when ordering, some need different extend information, eg. UserInfo-Bas... | You could try to use countApprox on RDD API, altough this also launches a Spark job, it should be faster as it just gives you an estimate of the true count for a given time you want to spend (milliseconds) and a confidence interval (i.e. the probabilty that the true value is within that range): example usage: val cntIn... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/44273875', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/8089138/']} | jdg_329100 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
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We introduce some definitions: A structure $\mathfrak{A}=\langle A,<,+,\cdot,0,1 \rangle$ where $<$ is a linear ordering, $+$ and $\cdot$ are binary operations, and $0,1... | $a\cdot 0=0$ is a consequence of the basic field axioms; for example $$ a \cdot 0 = a\cdot(0+0) = a\cdot 0 + a\cdot 0 $$ and then cancel one of the $a\cdot 0$ s. For $0<1$ , note that if this was not true we would have $1<0$ (since $<$ is supposed to be a total order) and therefore $0<-1$ by axiom 5. But then by axiom ... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/3065695', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/368425/']} | jdg_303416 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
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I am trying to split the Value using a separator.But I am finding the surprising results String data = "5|6|7||8|9||";String[] split = data.split("\\|");System.out.println(sp... | split(delimiter) by default removes trailing empty strings from result array. To turn this mechanism off we need to use overloaded version of split(delimiter, limit) with limit set to negative value like String[] split = data.split("\\|", -1); Little more details: split(regex) internally returns result of split(regex, ... | {} | {'log_upvote_score': 10, 'links': ['https://Stackoverflow.com/questions/14602062', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1503535/']} | jdg_238986 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
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Is there a way to create parquet files from java? I have data in memory (java classes) and I want to write it into a parquet file, to later read it from apache-drill. Is ther... | ParquetWriter's constructors are deprecated(1.8.1) but not ParquetWriter itself, you can still create ParquetWriter by extending abstract Builder subclass inside of it. Here an example from parquet creators themselves ExampleParquetWriter : public static class Builder extends ParquetWriter.Builder<Group, Builder> { ... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/39728854', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/6817087/']} | jdg_174301 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
Is it possible to determine (and if so, how) the complex conjugate $\bar{z}$ of $z$, if you don't already know that $z = x + i y$? I think you can use $\log(z)$ to get t... | As others have pointed out, since $\bar{z}$ is not holomorphic, there is no elementary function representation in terms of $z$. The intuitive reason that complex conjugation is not holomorphic is that it reverses orientation. More precisely, any holomorphic function is locally conformal (since the zeroes of its derivat... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/28594', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/1919/']} | jdg_356765 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum unix.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I am new to Linux so pardon me for the possible confusion you may encounter in this question. From what I understand, filesystem specifies how a partition stores/manages... | As I wrote in https://superuser.com/a/293160/38062 : The problem here is the word "filesystem". In the POSIX/Unix/Linux worlds, it is used to mean several different things. The "filesystem" is sometimes the entire system of files, rooted at / and as presented to applications softwares by the operating system kernel. ... | {} | {'log_upvote_score': 5, 'links': ['https://unix.stackexchange.com/questions/249916', 'https://unix.stackexchange.com', 'https://unix.stackexchange.com/users/144104/']} | jdg_85286 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am trying to fetch JSON data/file from other server/domain. My understanding is that from below code i should be able to see success alert but i see error alert $.ajax({ ... | It seems that your Python shell uses a diffenrent PYTHONPATH than the python you execute in the terminal. You can verify that by typing import sysprint sys.path in both shells and comparing the two outputs. I assume that the installed module path(s) are missing in the output of the python started in the terminal. you c... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/30378116', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2139633/']} | jdg_211412 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum math.stackexchange.com. Provide a good and informational response to it like a helpful human would.
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Proving an Combination formula $\displaystyle \binom{n}{k} = \binom{n-1}{k}+\binom{n-1}{k-1}$ $\bf{My Try}$::$\displaystyle{\binom{n-1}{k}+\binom{n-1}{k-1}=}$ $\displays... | Given $n$ people we can form a committee of size $k$ in ${n\choose k}$ ways. We can count the same thing by counting the number of ways in which person $x$ is in the committee and person $x$ is not in the committee. The number of ways person $x$ is not in the committee is ${n-1\choose k}$. We have $n-1$ people to work ... | {} | {'log_upvote_score': 4, 'links': ['https://math.stackexchange.com/questions/545089', 'https://math.stackexchange.com', 'https://math.stackexchange.com/users/14311/']} | jdg_208570 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am using AngularCLI and an Angular v8.In regards to Angular Universal, I have encountered an issue where after I run these commands which are the preparatory steps to setup... | I faced the same issue " ERROR in Module build failed... Can't find stylesheet to import " while running the same command to build ssr "Angular Universal".for some reason the building process is ignoring "stylePreprocessorOptions" path reference. Solution 1 : change the @import reference to point to the files example @... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/59187652', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/6891406/']} | jdg_246783 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
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When debugging my code I quite often want to know the value of #define'd constants. But the debugger does not appear to know their values. This means I have to chase around l... | For whatever 10 minutes on Google's worth, it seems Visual Studio doesn't support this. Some compilers do attempt this, but there's a reason it's a bit fragile / best-effort... To first rehash and knock down the common but bogus explanation for this: there's a conceptually distinct preprocessing step that substitutes t... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/32649726', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/169774/']} | jdg_123186 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm getting quite an unexpected behaviour using pandas' pd.to_datetime . My pd.Series is as follows: 0 2017-01-06 14:37:161 2017-01-27 00:00:002 2017-... | The error you are receiving isn't related to your Index . It's related to this issue which should have been fixed as of 0.25.0 . The issue was related to the following inconsistent handling of multiple null types when using pd.to_datetime import pandas as pdpd.core.algorithms.unique([pd.NaT, None])#array([NaT, None], d... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/58595395', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/9698684/']} | jdg_381821 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I'm using Doctrine2 for a project that might get a lot of traffic and I'm welling to do some pagination in a search page and that only fetch 5 results per pageSo is there a g... | Doctrine 2.2 ships with a paginator . However, it does require you to write DQL queries. If you insist on not writing any DQL, you can start by looking at the Doctrine EntityRepository class; specifically, the findBy() method . It has optional parameters for limit and offset, so you can try something like this (using y... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/9586446', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/885091/']} | jdg_150026 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have a store: var store = new Ext.data.store({ autoLoad: true, autoSync: true, model: 'myModel', proxy: { ... | This should definitely work: Ext.getCmp('myGridID').getStore().load(); Are you getting any javascript errors when you use the above syntax? If so, seeing the specific error message might give some clues. Also, ALWAYS ALWAYS use Chrome developer tools (or Firebug or IE Developer Toolbar if you love Firefox/IE). In this ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/8934108', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1076333/']} | jdg_225347 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have a NSMUtableArray which has elements, for example: a,b,c,e And I want to add an object d to behind c and before e .In other words, I'd like to insert an object to a sor... | You can use -[NSArray indexOfObject:inSortedRange:options:usingComparator:] to ask an NSArray for the index where an object should be inserted given an array range that’s currently sorted. For example, assuming the entire array is sorted:: NSMutableArray *array = …;id newObject = …;NSComparator comparator = …;NSUIntege... | {} | {'log_upvote_score': 8, 'links': ['https://Stackoverflow.com/questions/8180115', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/371974/']} | jdg_329536 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
To check to see if an object is null you can do either: var myObject = DoSomeCallThatMayReturnNull();var myString = string.Empty; . if (myObject == null) myString = "null"; ... | I would implement it like this: static class Extensions{ public static bool IsNull<T>(this T obj) where T : class { return obj == null; } public static bool IsNull<T>(this T? obj) where T : struct { return !obj.HasValue; }} This way, it can't be called on value types (which are never nul... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/21126767', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/223742/']} | jdg_229273 | PrimeIntellect/stackexchange-question-answering |
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Below is a question asked on the forum mathoverflow.net. Provide a good and informational response to it like a helpful human would.
Question:
Suppose that $S$ and $T$ are two smooth manifolds and '$ \Re$' be the reals with the normal manifold structure. And here I use '$=$' to mean diffeomorphism.Is the statement be... | Just to write out Ryan's answer: Let $S$ be the sphere with three closed disks removed. Let $T$ be the torus with one closed disk removed. Note that $T$ is non-planar. Thus $S$ is not homeomorphic to $T$. $\newcommand{\RR}{\mathbb{R}}$ $\newcommand{\cross}{\times}$ On the other hand, let $S' = S \cross \RR$ and let ... | {} | {'log_upvote_score': 4, 'links': ['https://mathoverflow.net/questions/125929', 'https://mathoverflow.net', 'https://mathoverflow.net/users/32635/']} | jdg_218868 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 15067136 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I am trying to automate the adding of new text files, which all have the same (known) layout. The columns are separated using tabs (the TAB button). My question is, is it pos... | You'll need to go through the wizard once to make your specification file. TO do this import your text file like normal but before you get too deep into the wizard click on the bottom left, the "Advanced..." button. This is where you make your spec file. Make ll these columns match your input file, data types and all. ... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/15067136', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2060696/']} | jdg_174508 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 583970 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have to process a large byte array that is passed to my function. I need to copy the content from this incoming byte array in smaller "chunks" to an outbound byte array. Fo... | You might want to look into Array.Copy or Buffer.BlockCopy ; this will clean things up a bit, since you won't have to copy all of the bytes individually: int incomingOffset = 0;while(incomingOffset < incomingArray.Length){ int length = Math.Min(outboundBuffer.Length, incomingArray.Length - incomingOffset); //... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/583970', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/70592/']} | jdg_196749 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 11282401 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
In my python code I check the type of one of the parameters to make sure it is of the type I expect. For instance: def myfunction(dbConnection): if (type(dbConnection)<>bp... | With all due respect, It looks like you guys are not quite right! I can use duck typing as said, but there is a way to do what I intended to do in the first place: from http://docs.python.org/dev/library/unittest.mock.html Mock objects that use a class or an instance as a spec or spec_set are able to pass isintance tes... | {} | {'log_upvote_score': 7, 'links': ['https://Stackoverflow.com/questions/11282401', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/487855/']} | jdg_178901 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 448512 |
Below is a question asked on the forum stats.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I need to find/fit a model for the color of an object. Suppose its color is generally yellow and we have 10000-by-3 data which are pixel values for R, G, B channels. Fi... | The zero values in the first component's covariance matrix suggest that these are some points (maybe even just two) that have exactly the same value (which must be 168) on the second variable. The similarity of the parameter estimates of the second component with the overall MVG suggests that this second component cont... | {} | {'log_upvote_score': 4, 'links': ['https://stats.stackexchange.com/questions/448512', 'https://stats.stackexchange.com', 'https://stats.stackexchange.com/users/137591/']} | jdg_327043 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 26598 |
Below is a question asked on the forum unix.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I had a problem (new to me) last week. I have a ext4 (Fedora 15) filesystem. The application that runs on the server suddenly stopped. I couldn't find the problem at fir... | It seems that you have a lot more files than normal expectation. I don't know whether there is a solution to change the inode table size dynamically. I'm afraid that you need to back-up your data, and create new filesystem, and restore your data. To create new filesystem with such a huge inode table, you need to use '... | {} | {'log_upvote_score': 6, 'links': ['https://unix.stackexchange.com/questions/26598', 'https://unix.stackexchange.com', 'https://unix.stackexchange.com/users/13239/']} | jdg_199473 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 210475 |
Below is a question asked on the forum mathematica.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
In the Details section of the Mathematica documentation for PrecisionGoal , one is told that Even though you may specify PrecisionGoal -> n , the results you get ... | We can adapt the MonitorMethod : Options[MonitorMethod] = {Method -> Automatic, "MonitorFunction" -> Function[{h, state, meth}, Print[{"H" -> h, "SD" -> state@"SolutionData"}]]};MonitorMethod /: NDSolve`InitializeMethod[MonitorMethod, stepmode_, sd_, rhs_, state_, OptionsPattern[MonitorMethod]] := Modu... | {} | {'log_upvote_score': 5, 'links': ['https://mathematica.stackexchange.com/questions/210475', 'https://mathematica.stackexchange.com', 'https://mathematica.stackexchange.com/users/-1/']} | jdg_364712 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 54820 |
Below is a question asked on the forum serverfault.com. Provide a good and informational response to it like a helpful human would.
Question:
The current generation of SSDs suffer write-speed slowdown (for random writes) over time because of the way data needs to be read and then written in blocks. Various manufacto... | There can't be a such generic software like there is defragmentation software for non SSD hard drive. The reason is that on a non SSD Hard Drive, data are stored physically on a known place. By knowing the LBA address of data, a defragmentation tool now where a data is physically on the hard drive and can move it where... | {} | {'log_upvote_score': 4, 'links': ['https://serverfault.com/questions/54820', 'https://serverfault.com', 'https://serverfault.com/users/11495/']} | jdg_114659 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 30881786 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
Can Spring Boot be used with OSGi? If not, any plans to have an OSGi Spring Boot (Apache Felix or Eclipse Equinox)? In my opinion, cloud applications must be highly modular a... | Yes, it's possible to run Spring Boot apps in OSGI container. First of all, you'll have to switch from Spring Boot jar packaging to OSGI bundle . If you're using Maven you can use org.apache.felix:maven-bundle-plugin for doing that.As Spring Boot dependency jars are not valid OSGI bundles, we should either make them va... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/30881786', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3646774/']} | jdg_138404 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 39069361 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
recently I started adding my application IOS 10 features while I encountered a weird bug: When authenticating with facebook SDK via browser as soon as I click the confirmatio... | I was running into this issue as well. It seems one of the UIApplication Delegate methods was deprecated in iOS 9 and presumably removed in iOS 10. optional func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool I replaced it with the following method: func ap... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/39069361', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3957758/']} | jdg_271524 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 20786104 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I have a schema like following : - var P = { s : [{ data : [], sec : mongoose.Schema.Types.ObjectId }] }; Now I want to find only the object of sectio... | You can use the $elemMatch projection operator to limit an array field like s to a single, matched element, but you can't remove the s level of your document using find . db.test.find({}, {_id: 0, s: {$elemMatch: {sec: '52b9830cadaa9d2732000005'}}}) outputs: { "s": [ { "data": [ ], "sec": "52b9830cadaa9d2... | {} | {'log_upvote_score': 5, 'links': ['https://Stackoverflow.com/questions/20786104', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2722930/']} | jdg_324060 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 55119 |
Below is a question asked on the forum physics.stackexchange.com. Provide a good and informational response to it like a helpful human would.
Question:
I know that when there are excess positive charges in a conductor, for example, a metal sphere, the positive charges will spread out over its surface. However, I am c... | Physically what is happening is this: When you touch the positively charged source to the conductor (the metal sphere), electrons leave the conductor through the point of contact. This leaves the point of contact on the conductor with a large deficit of electrons, and thus the point has a positive charge density. The p... | {} | {'log_upvote_score': 5, 'links': ['https://physics.stackexchange.com/questions/55119', 'https://physics.stackexchange.com', 'https://physics.stackexchange.com/users/21235/']} | jdg_235581 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 972 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I've read that it is possible to add a method to an existing object (i.e., not in the class definition) in Python. I understand that it's not always good to do so. But how mi... | In Python, there is a difference between functions and bound methods. >>> def foo():... print "foo"...>>> class A:... def bar( self ):... print "bar"...>>> a = A()>>> foo<function foo at 0x00A98D70>>>> a.bar<bound method A.bar of <__main__.A instance at 0x00A9BC88>>>>> Bound methods have been "bound" (h... | {} | {'log_upvote_score': 11, 'links': ['https://Stackoverflow.com/questions/972', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/145/']} | jdg_80822 | PrimeIntellect/stackexchange-question-answering |
stackexchange | llm_judgeable_groundtruth_similarity | 36262578 |
Below is a question asked on the forum Stackoverflow.com. Provide a good and informational response to it like a helpful human would.
Question:
I've got a custom select component which sets the model when you click on a li item, but since I manually call this.modelChange.next(this.model) every time I change the model... | So my question is if there's something similar to $scope.$watch where I can watch if the value of input property model changes If model is a JavaScript primitive type (Number, String, Boolean), then you can implement ngOnChanges() to be notified of changes. See cookbook example and lifecycle doc, OnChanges section . A... | {} | {'log_upvote_score': 6, 'links': ['https://Stackoverflow.com/questions/36262578', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/4054974/']} | jdg_350130 | PrimeIntellect/stackexchange-question-answering |
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