Id
int64
4
8.51M
PostTypeId
int64
1
7
AcceptedAnswerId
int64
7
75.5M
ParentId
int64
4
41.8M
Score
int64
-208
27.7k
ViewCount
int64
11
12.4M
Body
stringlengths
0
45k
Title
stringlengths
2
150
ContentLicense
stringclasses
3 values
FavoriteCount
int64
0
225
CreationDate
stringdate
2008-07-31 21:42:52
2011-12-14 18:48:47
LastActivityDate
stringdate
2008-08-01 12:19:17
2023-03-05 04:40:26
LastEditDate
stringdate
2008-08-01 13:54:25
2023-03-05 03:12:45
LastEditorUserId
int64
-1
21.3M
OwnerUserId
int64
-1
21.1M
Tags
listlengths
1
6
40,366
2
null
40,352
11
null
> It was posted before .NET 4 became available, which apparently introduced some optimizations regarding `Type` and thus rendered the information in this answer obsolete. See [this more recent answer](https://stackoverflow.com/a/1438443/240733) for details. According to [this blog post (from 2006) by Vance Morrison](...
null
CC BY-SA 3.0
null
2008-09-02T19:28:14.047
2017-04-25T10:23:56.610
2017-05-23T11:33:13.533
-1
266
null
40,373
2
null
31,919
3
null
If you using the GAC, you can at least do `iisapp.vbs /a "App Pool Name" /r` instead of `iisreset` (it's quicker to recycle a single app pool than to restart IIS).
null
CC BY-SA 2.5
null
2008-09-02T19:31:37.140
2008-09-02T19:31:37.140
null
null
4,301
null
40,372
1
40,378
null
3
10,146
I need to reformat my machine but I have so many user/passwords stored in FF2 that I just keep putting it off. Yes I know about backing up the entire profile and restoring it. But for some reason my profile has many issues and I want to start fresh with that as well. Are the username and passwords stored in a text fil...
How can you export the saved username and passwords in FireFox 2?
CC BY-SA 2.5
0
2008-09-02T19:31:26.190
2016-03-21T22:39:38.093
2008-09-26T18:57:28.593
2,134
3,747
[ "firefox" ]
40,370
2
null
40,346
21
null
The venerable [Dr. Dobbs Journal](http://www.ddj.com/) is still pretty good. It covers multiple platforms, and mixes some fairly hard-core technical articles with lighter fare (interviews with notables, a "Developer Diaries" column that profiles regular-Joe (and Jane) developers from a range of fields). If you are empl...
null
CC BY-SA 2.5
null
2008-09-02T19:30:40.077
2008-09-02T19:30:40.077
null
null
3,776
null
40,377
2
null
3,748
0
null
I would go with the file system approach. No need to create or maintain a DB with images, it will save you some major headaches in the long run.
null
CC BY-SA 2.5
null
2008-09-02T19:33:44.860
2008-09-02T19:33:44.860
null
null
2,140,183
null
40,376
1
41,157
null
14
7,618
Is it possible to handle POSIX signals within the Java Virtual Machine? At least [SIGINT](http://en.wikipedia.org/wiki/SIGINT_(POSIX)) and [SIGKILL](http://en.wikipedia.org/wiki/SIGKILL) should be quite platform independent.
Handle signals in the Java Virtual Machine
CC BY-SA 2.5
0
2008-09-02T19:33:15.907
2012-10-30T11:47:33.970
2008-09-09T23:13:40.527
-1
4,308
[ "java", "jvm", "process", "posix", "signals" ]
40,378
2
null
40,372
3
null
There is a Firefox add-on called [Password Exporter](https://addons.mozilla.org/en-US/firefox/addon/2848). It can export to XML or CSV files that can be imported in another browser or computer.
null
CC BY-SA 3.0
null
2008-09-02T19:34:09.850
2015-06-06T06:06:48.377
2015-06-06T06:06:48.377
478,656
720
null
40,379
2
null
40,372
2
null
This extension will do it for you: [https://addons.mozilla.org/en-US/firefox/addon/2848](https://addons.mozilla.org/en-US/firefox/addon/2848)
null
CC BY-SA 2.5
null
2008-09-02T19:34:32.347
2008-09-02T19:34:32.347
null
null
29
null
40,380
2
null
40,346
2
null
[Game Developer Magazine](http://www.gdmag.com/) has lots of very good articles, though as you might expect they tend to skew towards C++.
null
CC BY-SA 2.5
null
2008-09-02T19:34:38.867
2008-09-02T19:34:38.867
null
null
3,114
null
40,382
2
null
40,346
1
null
I really enjoy [IEEE Software](http://www.computer.org/portal/site/software/) because it covers broader issues regarding software engineering.
null
CC BY-SA 2.5
null
2008-09-02T19:37:19.140
2008-09-02T19:37:19.140
null
null
2,820
null
40,381
2
null
40,242
0
null
The best way is to print out the code, crumple it up, and throw it out. Don't even recycle the paper. You've got an application that is written in 1,000+ line long JSPs. It probably has a god-awful Domain Model (if it even has one at all) and doesn't just MIX presentation with business logic, it BLENDS it and sits the...
null
CC BY-SA 2.5
null
2008-09-02T19:35:12.373
2008-09-02T19:35:12.373
null
null
543
null
40,367
2
null
39,847
2
null
Launching a Python interpreter instance just to select the right binary to run would be much heavier than you need. I'd distribute a shell .rc file which provides aliases. In /shared/bin, you put the various binaries: /shared/bin/toolname-mac, /shared/bin/toolname-debian-x86, /shared/bin/toolname-netbsd-dreamcast, et...
null
CC BY-SA 2.5
null
2008-09-02T19:29:07.193
2008-09-02T19:29:07.193
null
null
3,286
null
40,388
2
null
39,758
1
null
Personally, I'm hoping it has less of an impact on web developers and more of an impact on browser developers. Some of the features are really nice, and while the process-oriented approach to separation of tabs will probably make it hefty compared to other browsers, I like the ideas behind it. My guess is it's going ...
null
CC BY-SA 2.5
null
2008-09-02T19:39:24.113
2008-09-02T19:39:24.113
null
null
2,547
null
40,389
2
null
40,368
11
null
No. Inode limits are per-filesystem, and decided at filesystem creation time. You could be hitting another limit, or maybe 'ls' just doesn't perform that well. Try this: ``` tune2fs -l /dev/DEVICE | grep -i inode ``` It should tell you all sorts of inode related info.
null
CC BY-SA 2.5
null
2008-09-02T19:39:29.603
2008-09-02T19:39:29.603
null
null
4,272
null
40,385
2
null
40,368
0
null
Can you get a real count of the number of files? Does it fall very near a 2^n boundry? Could you simply be running out of RAM to hold all the file names? I know that in windows at least file system performance would drop dramatically as the number of files in the folder went up, but I thought that linux didn't suffe...
null
CC BY-SA 2.5
null
2008-09-02T19:38:54.673
2008-09-02T19:38:54.673
null
null
3,043
null
40,374
2
null
40,346
1
null
I subscribe to MSDN magazine, it's a bit thinner now than in years past, but for .NET it covers a variety of topics, it's a good way to keep abreast of new Microsoft offerings. All the content is available online on MSDN, and of course online resources/blogs are a lot more up to date, but sometimes it's nice to have a...
null
CC BY-SA 2.5
null
2008-09-02T19:31:56.890
2008-09-02T19:31:56.890
null
null
2,194
null
40,390
2
null
40,376
4
null
Perhaps [Runtime#addShutdownHook](http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Runtime.html#addShutdownHook%28java.lang.Thread%29) ?
null
CC BY-SA 2.5
null
2008-09-02T19:39:45.717
2008-09-02T19:39:45.717
null
null
3,295
null
40,364
2
null
40,264
16
null
In your case, stick with the constructor. The information belongs in Customer and 4 fields are fine. In the case you have many required and optional fields the constructor is not the best solution. As @boojiboy said, it's hard to read and it's also hard to write client code. @contagious suggested using the default p...
null
CC BY-SA 2.5
null
2008-09-02T19:26:11.210
2008-09-02T19:26:11.210
null
null
4,213
null
40,398
2
null
40,259
0
null
Maybe tcl/tk would provide what you want [http://www.tcl.tk/](http://www.tcl.tk/) Here's the page on interfacing with curses. There is a claim there of integration with ncurses. [http://www2.tcl.tk/2372](http://www2.tcl.tk/2372)
null
CC BY-SA 3.0
null
2008-09-02T19:43:22.323
2012-02-17T16:52:28.393
2012-02-17T16:52:28.393
3,275
3,275
null
40,402
1
40,427
null
218
537,397
I need to empty an LDF file before sending to a colleague. How do I force SQL Server to truncate the log?
What is the command to truncate a SQL Server log file?
CC BY-SA 2.5
0
2008-09-02T19:44:50.463
2020-04-16T20:25:50.563
2008-09-03T16:13:06.767
-1
1,042
[ "sql-server", "truncate", "logging" ]
40,371
2
null
40,264
4
null
I'd encapsulate similar fields into an object of its own with its own construction/validation logic. Say for example, if you've got - - - - I'd make a class that stores phone and address together with a tag specifying wether its a "home" or a "business" phone/address. And then reduce the 4 fields to merely an array...
null
CC BY-SA 2.5
null
2008-09-02T19:31:20.700
2008-09-02T19:38:27.110
2008-09-02T19:38:27.110
3,055
3,055
null
40,413
1
40,419
null
1
2,497
Moving through the maze forward is pretty easy, but I can't seem to figure out how to back up through the maze to try a new route once you hit a dead end without going back too far?
How to traverse a maze programmatically when you've hit a dead end
CC BY-SA 3.0
null
2008-09-02T19:47:38.163
2017-10-11T03:12:21.847
2017-10-11T03:12:21.847
1,033,581
4,298
[ "c#", "artificial-intelligence", "maze" ]
40,419
2
null
40,413
4
null
Use [backtracking](http://www.cs.bu.edu/teaching/alg/maze/) by keeping a stack of previous direction decisions.
null
CC BY-SA 2.5
null
2008-09-02T19:50:36.800
2008-09-02T19:50:36.800
null
null
3,560
null
40,392
2
null
40,368
0
null
Unless you are getting an error message, ls is working but very slowly. You can try looking at just the first ten files like this: `ls -f | head -10` If you're going to need to look at the file details for a while, you can put them in a file first. You probably want to send the output to a different directory than th...
null
CC BY-SA 3.0
null
2008-09-02T19:40:28.790
2012-05-16T15:54:59.697
2012-05-16T15:54:59.697
1,392,398
3,275
null
40,417
2
null
17,955
1
null
PowerBuilder in particular has a nice trick you can do to incorporate the build number from an ini file into the compiled application. Details here: [http://www.pbdr.com/pbtips/ex/autorev.htm](http://www.pbdr.com/pbtips/ex/autorev.htm) We have ini file inside source control that stores the build number and its value ...
null
CC BY-SA 2.5
null
2008-09-02T19:50:15.130
2008-09-02T19:50:15.130
null
null
4,311
null
40,410
2
null
34,519
7
null
A semaphore is an object containing a natural number (i.e. a integer greater or equal to zero) on which two modifying operations are defined. One operation, `V`, adds 1 to the natural. The other operation, `P`, decreases the natural number by 1. Both activities are atomic (i.e. no other operation can be executed at the...
null
CC BY-SA 2.5
null
2008-09-02T19:46:32.580
2008-09-02T19:46:32.580
null
null
4,285
null
40,421
2
null
40,402
3
null
backup log logname with truncate_only followed by a dbcc shrinkfile command
null
CC BY-SA 2.5
null
2008-09-02T19:51:59.323
2008-09-02T19:51:59.323
null
null
740
null
40,384
2
null
40,161
2
null
Here's something I cooked up for something similar. It handles the following types of ranges: ``` 1 single number 1-5 range -5 range from (firstpage) up to 5 5- range from 5 up to (lastpage) .. can use .. instead of - ;, can use both semicolon, comma, and space, as separators ``` ...
null
CC BY-SA 2.5
null
2008-09-02T19:37:43.837
2008-09-02T19:37:43.837
null
null
267
null
40,427
2
null
40,402
135
null
if I remember well... in query analyzer or equivalent: ``` BACKUP LOG databasename WITH TRUNCATE_ONLY DBCC SHRINKFILE ( databasename_Log, 1) ```
null
CC BY-SA 2.5
null
2008-09-02T19:53:31.410
2008-09-02T19:53:31.410
null
null
1,178
null
40,412
2
null
39,281
3
null
If indeed an audit trail is all you need, I'd lean toward the audit table solution (complete with denormalized copies of the important column on other tables, e.g., `UserName`). Keep in mind, though, that bitter experience indicates that a single audit table will be a huge bottleneck down the road; it's probably worth...
null
CC BY-SA 2.5
null
2008-09-02T19:47:02.440
2008-09-02T19:47:02.440
null
null
4,203
null
40,422
1
339,033
null
-1
1,586
Ok, so I want an autocomplete dropdown with linkbuttons as selections. So, the user puts the cursor in the "text box" and is greated with a list of options. They can either start typing to narrow down the list, or select one of the options on the list. As soon as they click (or press enter) the dataset this is linked t...
Autocomplete Dropdown with Linkbuttons - or "AJAX gone wild"
CC BY-SA 2.5
null
2008-09-02T19:52:24.143
2008-12-04T08:10:00.157
null
null
4,140
[ "ajax", ".net-3.5" ]
40,429
2
null
40,230
0
null
@Simon, You raise very good points. I was already thinking about the "temporary" "human-readable" numbers i'd generate while offline, that i'd recreate on sync. But i wanted to avoid doing with with foreign keys, etc.
null
CC BY-SA 2.5
null
2008-09-02T19:54:19.613
2008-09-02T19:54:19.613
null
null
3,314
null
40,434
2
null
24,470
167
null
Remember that the MAX aggregate function will work on text as well as numbers. This query will only require the table to be scanned once. ``` SELECT Action, MAX( CASE data WHEN 'View' THEN data ELSE '' END ) ViewCol, MAX( CASE data WHEN 'Edit' THEN data ELSE '' END ) EditCol FROM t GROUP BY Action ``...
null
CC BY-SA 2.5
null
2008-09-02T19:55:19.270
2008-09-02T19:55:19.270
null
null
4,286
null
40,420
2
null
40,402
335
null
In management studio: - - `Properties``Options`- - - `Tasks``Shrink``Files`- - Alternatively, the SQL to do it: ``` ALTER DATABASE mydatabase SET RECOVERY SIMPLE DBCC SHRINKFILE (mydatabase_Log, 1) ``` Ref: [http://msdn.microsoft.com/en-us/library/ms189493.aspx](http://msdn.microsoft.com/en-us/library/ms189493.a...
null
CC BY-SA 3.0
null
2008-09-02T19:51:12.087
2018-01-22T17:59:37.657
2018-01-22T17:59:37.657
968,244
369
null
40,433
2
null
40,193
0
null
You should provide information about what operating system and the type of filesystem you are using. On certain flavours of UNIX and certain filesystems you might be able to use the commands [ff](http://www.unix.com/man-page/all/0/ff) and [ncheck](http://www.unix.com/man-page/all/0/ncheck) as alternatives.
null
CC BY-SA 3.0
null
2008-09-02T19:55:17.443
2017-10-12T02:56:11.153
2017-10-12T02:56:11.153
446,106
4,071
null
40,439
2
null
40,372
2
null
You can use the [Foxmarks](https://addons.mozilla.org/en-US/firefox/addon/2410) plugin. This exports to XML or CSV format. I used it a week ago and it works really fine.
null
CC BY-SA 2.5
null
2008-09-02T19:56:10.233
2008-09-02T19:56:10.233
null
null
4,313
null
40,442
2
null
39,119
0
null
[MultiSelectTreeView](http://www.codeproject.com/KB/tree/Multiselect_Treeview.aspx): > Why doesn't .NET have a multiselect treeview? There are so many uses for one and turning on checkboxes in the treeview is a pretty lousy alternative.
null
CC BY-SA 2.5
null
2008-09-02T19:59:24.720
2008-09-02T19:59:24.720
null
null
3,583
null
40,424
2
null
40,413
2
null
The simplest (to implement) algorithm would be to just keep a stack of locations you've been at, and the route you took from each, unless backtracking gives you that information. To go back, just pop off old locations from the stack and check for more exits from that location until you find an old location with an unt...
null
CC BY-SA 2.5
null
2008-09-02T19:53:01.130
2008-09-02T19:53:01.130
null
null
267
null
40,441
2
null
40,368
58
null
`df -i` should tell you the number of inodes used and free on the file system.
null
CC BY-SA 3.0
null
2008-09-02T19:57:08.687
2012-07-11T13:50:08.600
2012-07-11T13:50:08.600
142,162
4,071
null
40,438
2
null
40,372
0
null
Alas, this won't solve the re-importing problem, but check out [http://wejn.org/stuff/moz-export.html](http://wejn.org/stuff/moz-export.html) They have a single html page with a small javascript section that exports your passwords. Save the html to your desktop, read through to make sure it's not evil, open the page i...
null
CC BY-SA 2.5
null
2008-09-02T19:55:56.787
2008-09-02T19:55:56.787
null
null
4,301
null
40,450
2
null
40,413
1
null
Eric Lippert did a series of articles on creating a [C# implemention of A*](http://blogs.msdn.com/ericlippert/archive/tags/AStar/default.aspx), which might be more efficient.
null
CC BY-SA 2.5
null
2008-09-02T20:03:39.623
2008-09-02T20:03:39.623
null
null
3,043
null
40,443
2
null
40,361
3
null
Short answer: no. Such a function was considered and explicitly rejected for version 2 of the XPath spec (see the non-normative [Illustrative User-written Functions section](http://www.w3.org/TR/xpath-functions/#examples)).
null
CC BY-SA 2.5
null
2008-09-02T20:01:25.993
2008-12-27T16:17:17.520
2008-09-02T20:39:35.277
4,203
4,203
null
40,456
1
40,619
null
4
4,333
If I select from a table group by the month, day, year, it only returns rows with records and leaves out combinations without any records, making it appear at a glance that every day or month has activity, you have to look at the date column actively for gaps. How can I get a row for every day/month/year, even when no...
sql missing rows when grouped by DAY, MONTH, YEAR
CC BY-SA 2.5
0
2008-09-02T20:06:25.343
2009-04-03T17:19:13.027
null
null
2,477
[ "tsql", "date", "grouping" ]
40,459
2
null
40,230
0
null
First thought that comes to mind: Hasn't MS designed the DataSet and DataAdapter model to support scenarios like this? I believe I read that MS changed their ADO recordset model to the current DataSet model so it works great offline too. And there's also this [Sync Services for ADO.NET](http://msdn.microsoft.com/en-us...
null
CC BY-SA 2.5
null
2008-09-02T20:06:43.047
2008-09-02T20:06:43.047
null
null
3,055
null
40,458
2
null
38,875
0
null
@pek - That won't work, as your array keys are 0 and 1, not 'home' and 'page'. This code should do the trick, I believe: ``` <?php $whitelist = array( 'home', 'page', ); if(in_array($_GET['page'], $whitelist)) { include($_GET['page'] . '.php'); } else { include('home.php'); } ?> ``` As you've a whitelist...
null
CC BY-SA 2.5
null
2008-09-02T20:06:36.230
2008-09-02T20:06:36.230
null
null
1,902,010
null
40,452
1
40,479
null
5
3,600
I have to POST some parameters to a URL outside my network, and the developers on the other side asked me to not use HTTP Parameters: instead I have to post my key-values in . The fact is that I don't really understand what they mean: I tried to use a ajax-like post, with XmlHttp objects, and also I tried to write in ...
HTTP POST - I'm stuck
CC BY-SA 3.0
0
2008-09-02T20:04:28.920
2012-06-13T20:43:25.863
2012-06-13T20:43:25.863
457,162
1,178
[ "asp.net", "forms", "http", "post" ]
40,464
2
null
39,758
2
null
Google Chrome looks promising. It is of course in an early beta so it's missing a lot of the things people would need or at least feel they need, like plugins, cross-machine synchronization of data (could be done with plugins), cross-platform support (ie. Linux and Mac versions). So far it renders Gmail like a bat out...
null
CC BY-SA 2.5
null
2008-09-02T20:08:00.080
2008-09-02T20:08:00.080
null
null
267
null
40,462
2
null
40,456
5
null
Create a calendar table and outer join on that table
null
CC BY-SA 2.5
null
2008-09-02T20:07:20.300
2008-09-02T20:07:20.300
null
null
740
null
40,467
2
null
40,452
0
null
I think they mean they don't want you to use URL parameters (GET). If you use http headers, it's not really querying through POST any more.
null
CC BY-SA 2.5
null
2008-09-02T20:10:06.847
2008-09-02T20:10:06.847
null
null
3,043
null
40,423
1
40,616
null
10
3,266
Actually, this question seems to have two parts: - - [send and receive](http://erlang.org/doc/reference_manual/expressions.html#6.9) For the pattern matching part, I've been looking into various projects like [App](http://members.cox.net/nelan/app.html) and [Prop](http://www.cs.nyu.edu/leunga/papers/research/prop/pro...
How would you implement Erlang-like send and receive in C++?
CC BY-SA 2.5
0
2008-09-02T19:52:33.660
2014-04-17T08:09:02.620
2008-11-07T12:05:23.393
null
null
[ "c++", "erlang" ]
40,465
1
40,497
null
4
6,054
I have a List of Foo. Foo has a string property named Bar. I'd like to use to get a string[] of values for Foo.Bar in List of Foo. How can I do this?
How to get an array of distinct property values from in memory lists?
CC BY-SA 3.0
0
2008-09-02T20:08:51.607
2018-06-11T15:45:48.087
2015-05-08T17:18:38.483
1,362,287
1,946
[ "c#", ".net", "performance", "linq", "filtering" ]
40,445
2
null
40,230
0
null
i would start to look at SQL Server Compact Edition for this! It helps with all of your issues. [Data Storage Architecture with SQL Server 2005 Compact Edition](http://msdn.microsoft.com/en-us/library/bb380177.aspx) It specifically designed for > Field force applications (FFAs). FFAs usually share one or more o...
null
CC BY-SA 2.5
null
2008-09-02T20:01:57.863
2008-09-02T20:01:57.863
null
null
null
null
40,466
2
null
40,372
5
null
I've had luck just copying `signons2.txt` and `key3.db` over from one profile to another. See also [the documentation on MozillaZine](http://kb.mozillazine.org/Signons.txt).
null
CC BY-SA 2.5
null
2008-09-02T20:09:33.510
2008-09-02T20:09:33.510
null
null
null
null
40,455
2
null
40,452
0
null
You should post more information. For instance, is this C#? It looks like it, but I might be wrong. Also, you say you get an exception, what is the exception type and message? In any case, you can't redirect to a page for POST, you need to submit it from the browser, not from the server redirect, so if you want to a...
null
CC BY-SA 2.5
null
2008-09-02T20:06:19.740
2008-09-02T20:06:19.740
null
null
267
null
40,468
2
null
40,452
0
null
What language/framework? Using Python and httplib2, you should be able to do something like: ``` http = httplib2.Http() http.request(url, 'POST', headers={'key': 'value'}, body=urllib.urlencode('')) ```
null
CC BY-SA 2.5
null
2008-09-02T20:10:10.963
2008-09-02T20:10:10.963
null
null
4,203
null
40,472
2
null
38,779
3
null
By default (i.e. out of the box) net.tcp services are unsecured and don't perform any authentication at all. So you won't need (and in fact can't) set a service principal name. If you need to authenticate, then check the [net.tcp security](http://msdn.microsoft.com/en-us/library/system.servicemodel.nettcpsecurity.asp...
null
CC BY-SA 2.5
null
2008-09-02T20:12:02.473
2008-09-02T20:12:02.473
null
null
3,546
null
40,475
2
null
40,452
0
null
I believe that the Request object would only accept a certain set of predefined headers. There's an enumeration that lists all the supported HTTP Headers too. But I can't remember it at the moment... I'll look it up in a sec...
null
CC BY-SA 2.5
null
2008-09-02T20:13:17.743
2008-09-02T20:13:17.743
null
null
3,055
null
40,477
2
null
40,465
2
null
Try this: ``` var distinctFooBars = (from foo in foos select foo.Bar).Distinct().ToArray(); ```
null
CC BY-SA 2.5
null
2008-09-02T20:13:41.470
2008-09-02T20:13:41.470
null
null
267
null
40,479
2
null
40,452
1
null
Like @lassevk said, a redirect won't work. You should use the WebRequest class to do an HTTP POST from your page or application. There's an example [here](http://msdn.microsoft.com/en-us/library/debx8sh9.aspx).
null
CC BY-SA 2.5
null
2008-09-02T20:14:11.157
2008-09-03T20:31:05.337
2008-09-03T20:31:05.353
1,219
3,880
null
40,471
1
40,878
null
4,247
1,711,610
What are the differences between a [HashMap](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html) and a [Hashtable](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Hashtable.html) in Java? Which is more efficient for non-threaded applications?
What are the differences between a HashMap and a Hashtable in Java?
CC BY-SA 4.0
0
2008-09-02T20:12:00.117
2023-02-07T13:26:15.613
2020-08-01T11:19:23.890
1,063,716
4,316
[ "java", "collections", "hashmap", "hashtable" ]
40,480
1
null
null
7,645
2,574,861
I always thought Java uses . However, I read [a blog post](http://javadude.com/articles/passbyvalue.htm) which claims that Java uses . I don't think I understand the distinction the author is making. What is the explanation?
Is Java "pass-by-reference" or "pass-by-value"?
CC BY-SA 4.0
0
2008-09-02T20:14:29.270
2023-02-14T20:31:14.480
2023-02-14T20:31:14.480
5,323,892
4,315
[ "java", "methods", "parameter-passing", "pass-by-reference", "pass-by-value" ]
40,483
2
null
40,471
33
null
Based on the info [here](http://www.jguru.com/faq/view.jsp?EID=430247), I'd recommend going with HashMap. I think the biggest advantage is that Java will prevent you from modifying it while you are iterating over it, unless you do it through the iterator.
null
CC BY-SA 2.5
null
2008-09-02T20:14:53.840
2008-09-02T20:14:53.840
null
null
4,257
null
40,481
2
null
40,456
0
null
Look into using a [numbers table](http://andre-silva-cardoso.blogspot.com/2007/11/sql-trickspatterns-1-numbers-table.html). While it can be hackish, it's the best method I've come by to quickly query missing data, or show all dates, or anything where you want to examine values within a range, regardless of whether all...
null
CC BY-SA 2.5
null
2008-09-02T20:14:29.707
2008-09-02T20:14:29.707
null
null
2,314
null
40,473
2
null
34,519
438
null
Think of semaphores as bouncers at a nightclub. There are a dedicated number of people that are allowed in the club at once. If the club is full no one is allowed to enter, but as soon as one person leaves another person might enter. It's simply a way to limit the number of consumers for a specific resource. For examp...
null
CC BY-SA 3.0
null
2008-09-02T20:13:07.713
2012-01-27T03:44:11.717
2012-01-27T03:44:11.717
366,904
936
null
40,488
2
null
40,465
3
null
This should work if you want to use the fluent pattern: ``` string[] arrayStrings = fooList.Select(a => a.Bar).Distinct().ToArray(); ```
null
CC BY-SA 2.5
null
2008-09-02T20:16:09.343
2008-09-02T23:46:29.150
2008-09-02T23:46:29.150
1,463
1,463
null
40,486
2
null
40,452
3
null
Have you tried the WebClient class? An example might look like: ``` WebClient client = new WebClient(); NameValueCollection data = new NameValueCollection(); data["var1"] = "var1"; client.UploadValues("http://somewhere.com/api", "POST", data); ```
null
CC BY-SA 2.5
null
2008-09-02T20:15:33.260
2008-09-02T20:15:33.260
null
null
2,696
null
40,476
2
null
13,540
5
null
If you are not doing a merge in SQL 2008 you must change it to: if @@rowcount = 0 and @@error=0 otherwise if the update fails for some reason then it will try and to an insert afterwards because the rowcount on a failed statement is 0
null
CC BY-SA 2.5
null
2008-09-02T20:13:39.647
2008-09-02T20:13:39.647
null
null
3,893
null
40,495
1
40,562
null
36
50,344
I know I can do most of this by hacking Trac and using Git hooks, but I was wondering if someone has / knows of something ready. Commenting on (and closing) tickets from commit messages would be nice, specially if the diff appears inline with the comment/closing remark. sha1 hashes should be auto-linked to gitweb/cig...
Bug tracker setup with Git integration?
CC BY-SA 2.5
0
2008-09-02T20:17:11.963
2015-11-25T19:27:54.057
2008-09-02T22:54:47.747
305
4,272
[ "git", "integration", "version-control", "bug-tracking" ]
40,478
2
null
40,452
1
null
Take a look at HttpWebRequest. You should be able to construct a request to the URL in question using HttpWebRequest.Method = "POST".
null
CC BY-SA 2.5
null
2008-09-02T20:13:56.120
2008-09-02T20:13:56.120
null
null
1,865
null
40,498
2
null
40,465
0
null
Shouldn't you be able to do something like: ``` var strings = (from a in fooList select a.Bar).Distinct(); string[] array = strings.ToArray(); ```
null
CC BY-SA 4.0
null
2008-09-02T20:18:43.597
2018-06-11T15:45:48.087
2018-06-11T15:45:48.087
4,636,715
null
null
40,501
2
null
40,480
388
null
Java passes references by value. So you can't change the reference that gets passed in.
null
CC BY-SA 2.5
null
2008-09-02T20:20:08.710
2008-09-02T20:20:08.710
null
null
1,310
null
40,496
2
null
40,193
2
null
If a process "doesn't come back", I recommend [strace](http://linux.die.net/man/1/strace) to analyze how a process is interacting with the operating system. In case of ls: ``` $strace ls ``` you would have seen that it reads all directory entries ([getdents(2)](http://linux.die.net/man/2/getdents)) before it actual...
null
CC BY-SA 2.5
null
2008-09-02T20:17:46.500
2008-09-02T20:17:46.500
null
null
4,308
null
40,497
2
null
40,465
5
null
I'd go lambdas... wayyy nicer ``` var bars = Foos.Select(f => f.Bar).Distinct().ToArray(); ``` works the same as what @lassevk posted. I'd also add that you might want to keep from converting to an array until the last minute. LINQ does some optimizations behind the scenes, queries stay in its query form until ex...
null
CC BY-SA 2.5
null
2008-09-02T20:18:09.713
2008-09-02T20:25:04.440
2008-09-02T20:25:04.453
3,055
3,055
null
40,504
2
null
40,422
0
null
You'll have to handle the OnSelectedIndexChanged event of your drop down list to rebind your dataset based on the users selection. If you want the filtering to happen in an asynch postback, wrap the dataset (or datagrid I'm assuming) and your drop down in an UpdatePanel. That is one way to do it anyhow.
null
CC BY-SA 2.5
null
2008-09-02T20:20:25.137
2008-09-02T20:20:25.137
null
null
1,865
null
40,508
2
null
40,485
0
null
Don't exactly know how this can be done, but I remember some of my friends had to represent this game's grid with a Quadtree for a assignment. I'm guess it's real good for optimizing the space of the grid since you basically only represent the occupied cells. I don't know about execution speed though.
null
CC BY-SA 2.5
null
2008-09-02T20:21:12.810
2008-09-02T20:21:12.810
null
null
2,907
null
40,502
2
null
40,456
0
null
Building on what SQLMenace said, you can use a CROSS JOIN to quickly populate the table or efficiently create it in memory. [http://www.sitepoint.com/forums/showthread.php?t=562806](http://www.sitepoint.com/forums/showthread.php?t=562806)
null
CC BY-SA 2.5
null
2008-09-02T20:20:22.983
2008-09-02T20:20:22.983
null
null
3,043
null
40,485
1
null
null
44
45,303
To experiment, I've (long ago) implemented Conway's [Game of Life](http://en.wikipedia.org/wiki/Conway's_Game_of_Life) (and I'm aware of [this](https://stackoverflow.com/questions/1823/writing-a-conways-game-of-life-program) related question!). My implementation worked by keeping 2 arrays of booleans, representing the...
Optimizing Conway's 'Game of Life'
CC BY-SA 2.5
0
2008-09-02T20:15:13.527
2021-11-26T13:56:41.710
2017-05-23T11:54:26.267
-1
2,638
[ "algorithm", "performance", "language-agnostic", "conways-game-of-life" ]
40,507
2
null
40,480
232
null
Basically, reassigning Object parameters doesn't affect the argument, e.g., ``` private static void foo(Object bar) { bar = null; } public static void main(String[] args) { String baz = "Hah!"; foo(baz); System.out.println(baz); } ``` will print out `"Hah!"` instead of `null`. The reason this works is...
null
CC BY-SA 4.0
null
2008-09-02T20:21:04.683
2022-03-07T07:47:40.997
2022-03-07T07:47:40.997
9,575,631
4,203
null
40,520
2
null
40,485
0
null
There are table-driven solutions for this that resolve multiple cells in each table lookup. A google query should give you some examples.
null
CC BY-SA 2.5
null
2008-09-02T20:25:18.043
2008-09-02T20:25:18.043
null
null
267
null
40,510
2
null
34,194
-2
null
I have a detailed step by step guide, but it requires that you use isapi_rewrite. View it at: [http://biasecurities.com/blog/2008/how-to-enable-pretty-urls-with-asp-net-mvc-and-iis6/](http://biasecurities.com/blog/2008/how-to-enable-pretty-urls-with-asp-net-mvc-and-iis6/)
null
CC BY-SA 2.5
null
2008-09-02T20:21:40.173
2008-09-02T20:21:40.173
null
null
3,085
null
40,499
2
null
40,480
842
null
Java is always pass by value, with no exceptions, . So how is it that anyone can be at all confused by this, and believe that Java is pass by reference, or think they have an example of Java acting as pass by reference? The key point is that Java provides direct access to the values of , in circumstances. The only a...
null
CC BY-SA 3.0
null
2008-09-02T20:19:21.847
2016-01-22T03:37:07.313
2016-01-22T03:37:07.313
18,091
1,666
null
40,512
2
null
40,471
51
null
`Hashtable` is synchronized, whereas `HashMap` isn't. That makes `Hashtable` slower than `Hashmap`. For single thread applications, use `HashMap` since they are otherwise the same in terms of functionality.
null
CC BY-SA 4.0
null
2008-09-02T20:22:34.023
2020-09-15T20:28:43.900
2020-09-15T20:28:43.900
1,173,112
974
null
40,519
2
null
38,934
14
null
Two interesting options I have seen, but yet to use professionally, are the screencapture utility and a MacFuse demo. The screencapture utility has been around since 10.2, according to the man page, and could be linked to a Cocoa application by use of NSTask. The MacFuse demo worked by creating a new screenshot each ...
null
CC BY-SA 2.5
null
2008-09-02T20:25:08.417
2008-09-02T20:25:08.417
null
null
4,314
null
40,511
1
null
null
1
4,266
As the title already states, I'm trying to declare a nested function and return a pointer to that function. I want this function 'not' to return a new function pointer which will return the negation of whatever the original function was. Here is what I have: ``` someType not( someType original ) { int isNot( List...
Return function pointer to a nested function in C
CC BY-SA 2.5
null
2008-09-02T20:22:25.273
2009-04-14T08:44:13.957
2008-09-09T21:13:49.643
-1
402
[ "c", "pointers", "nested" ]
40,525
1
40,617
null
2
34,687
I'm trying to call a function after I load some XML into Actionscript, and I'm just wondering how I call that function. Example: ``` //Function Declarations function parentFunction() { function callMe() { textField.text = "lawl"; } } ``` Now, in a different part of the code, like an onRelease funct...
Call Functions within Function - Flash Actionscript 2.0
CC BY-SA 2.5
null
2008-09-02T20:25:54.780
2010-07-13T13:07:12.303
null
null
557
[ "flash", "actionscript", "actionscript-2" ]
40,522
2
null
40,471
57
null
`Hashtable` is similar to the `HashMap` and has a similar interface. It is recommended that you use `HashMap`, unless you require support for legacy applications or you need synchronisation, as the `Hashtables` methods are synchronised. So in your case as you are not multi-threading, `HashMaps` are your best bet.
null
CC BY-SA 3.0
null
2008-09-02T20:25:30.117
2015-03-02T08:55:23.043
2015-03-02T08:55:23.043
3,924,118
3,898
null
40,531
1
null
null
8
9,957
Extreme Programming, Scrum and Test Driven Development definitely seem to be the most popular Agile methods at the moment. But someone recently suggested that I take a look at Feature Driven Development. Have you ever used this method with any success? What are the advantages of using it?
Why should I use Feature Driven Development?
CC BY-SA 2.5
0
2008-09-02T20:26:49.240
2017-09-04T06:34:18.463
2015-02-17T12:14:53.083
2,594,742
2,342,930
[ "agile", "feature-driven" ]
40,509
2
null
40,485
0
null
It's a two dimensional automaton, so you can probably look up optimization techniques. Your notion seems to be about compressing the number of cells you need to check at each step. Since you only ever need to check cells that are occupied or adjacent to an occupied cell, perhaps you could keep a buffer of all such cell...
null
CC BY-SA 2.5
null
2008-09-02T20:21:28.347
2008-09-02T20:21:28.347
null
null
3,275
null
40,521
2
null
16,727
5
null
GWT has good support for internationalization. See this [link](http://code.google.com/docreader/#p=google-web-toolkit-doc-1-5&s=google-web-toolkit-doc-1-5&t=DevGuideInternationalization). The [i18nCreator](http://code.google.com/docreader/#p=google-web-toolkit-doc-1-5&s=google-web-toolkit-doc-1-5&t=DevGuideI18nCreator)...
null
CC BY-SA 2.5
null
2008-09-02T20:25:26.623
2008-09-02T20:25:26.623
null
null
4,229
null
40,537
2
null
40,511
0
null
I'm using GCC. You can turn on nested functions by using the flag: ``` -fnested-functions ``` when you compile.
null
CC BY-SA 2.5
null
2008-09-02T20:28:00.407
2008-09-02T20:28:00.407
null
null
402
null
40,529
2
null
40,485
39
null
I am going to quote my answer from the other question, because the chapters I mention have some very interesting and fine-tuned solutions. Some of the implementation details are in c and/or assembly, yes, but for the most part the algorithms can work in any language: > Chapters [17](http://www.jagregory.com/abrash-bla...
null
CC BY-SA 3.0
null
2008-09-02T20:26:32.843
2017-06-22T05:25:35.807
2020-06-20T09:12:55.060
-1
96
null
40,545
1
null
null
8
10,614
Is there is any way to change the datasource location for a report and all of it's subreports without having to open each of them manually?
Replace a database connection for report and all subreports
CC BY-SA 2.5
0
2008-09-02T20:29:40.513
2008-12-16T10:52:01.010
null
null
4,286
[ "crystal-reports" ]
40,535
1
2,745,475
null
11
3,696
I need to determine if I'm on a particular view. My use case is that I'd like to decorate navigation elements with an "on" class for the current view. Is there a built in way of doing this?
Asp.Net MVC: How to determine if you're currently on a specific view
CC BY-SA 2.5
0
2008-09-02T20:27:28.287
2010-04-30T15:05:08.063
null
null
3,085
[ "c#", "asp.net-mvc" ]
40,514
2
null
40,480
210
null
Java passes references to objects by value.
null
CC BY-SA 2.5
null
2008-09-02T20:23:30.340
2008-09-02T20:23:30.340
null
null
3,305
null
40,554
2
null
40,259
1
null
There's [Cursed GTK](http://zemljanka.sourceforge.net/cursed/), but it seems a bit dated. I found some references to a port of Qt to ncurses called Qt Console, but it seems to have disappeared.
null
CC BY-SA 2.5
null
2008-09-02T20:31:22.833
2008-09-02T20:31:22.833
null
null
null
null
40,548
2
null
40,471
74
null
In addition to what izb said, `HashMap` allows null values, whereas the `Hashtable` does not. Also note that `Hashtable` extends the `Dictionary` class, which as the [Javadocs](http://java.sun.com/j2se/1.4.2/docs/api/java/util/Dictionary.html) state, is obsolete and has been replaced by the `Map` interface.
null
CC BY-SA 2.5
null
2008-09-02T20:30:00.200
2008-09-02T20:30:00.200
null
null
4,249
null
40,555
2
null
40,244
-1
null
I doubt sh/bash can do it. ZSH would be a better bet, with its MULTIOS and coproc features.
null
CC BY-SA 2.5
null
2008-09-02T20:31:44.220
2008-09-02T20:31:44.220
null
null
4,118
null
40,564
2
null
40,485
5
null
As mentioned in Arbash's Black Book, one of the most simple and straight forward ways to get a huge speedup is to keep a change list. Instead of iterating through the entire cell grid each time, keep a copy of all the cells that you change. This will narrow down the work you have to do on each iteration.
null
CC BY-SA 2.5
null
2008-09-02T20:34:36.693
2008-09-02T20:34:36.693
null
null
4,319
null
40,571
2
null
40,568
1
null
Best to URL encode those, as they are clearly not supported in all web servers. Sometimes, even when there is a standard, not everyone follows it.
null
CC BY-SA 2.5
null
2008-09-02T20:36:36.113
2008-09-02T20:36:36.113
null
null
3,381
null
40,523
2
null
40,480
6,895
null
The terms "pass-by-value" and "pass-by-reference" have special, [precisely defined](https://en.wikipedia.org/w/index.php?title=Pass-by-value) meanings in computer science. These meanings differ from the intuition many people have when first hearing the terms. Much of the confusion in this discussion seems to come from ...
null
CC BY-SA 4.0
null
2008-09-02T20:25:37.433
2022-09-05T08:37:57.840
2022-09-05T08:37:57.840
912,829
4,192
null