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Java Regex - Matcher Class	The java.util.regex.Matcher class acts as an engine that performs match operations on a character sequence by interpreting a Pattern. Following is the declaration for java.util.regex.Matcher class − public final class Matcher extends Object implements MatchResult Implements a non-terminal append-and-replace s...	[ { "code": null, "e": 2258, "s": 2124, "text": "The java.util.regex.Matcher class acts as an engine that performs match operations on a character sequence by interpreting a Pattern." }, { "code": null, "e": 2323, "s": 2258, "text": "Following is the declaration for java.util.regex...
5 Levels of Difficulty — Bayesian Gaussian Random Walk with PyMC3 and Theano \| Towards Data Science	Today time series forecasting is ubiquitous, and decision-making processes in companies depend heavily on their ability to predict the future. Through a short series of articles, I will present you with a possible approach to this kind of problems, combining state-space models with Bayesian statistics. In the initial a...	[ { "code": null, "e": 476, "s": 172, "text": "Today time series forecasting is ubiquitous, and decision-making processes in companies depend heavily on their ability to predict the future. Through a short series of articles, I will present you with a possible approach to this kind of problems, combin...
Lucene - StandardAnalyzer	This is the most sophisticated analyzer and is capable of handling names, email addresses, etc. It lowercases each token and removes common words and punctuations, if any. Following is the declaration for the org.apache.lucene.analysis.StandardAnalyzer class − public final class StandardAnalyzer extends StopwordAnal...	[ { "code": null, "e": 2015, "s": 1843, "text": "This is the most sophisticated analyzer and is capable of handling names, email addresses, etc. It lowercases each token and removes common words and punctuations, if any." }, { "code": null, "e": 2104, "s": 2015, "text": "Following ...
__future__ Module in Python - GeeksforGeeks	17 Oct, 2021 __future__ module is a built-in module in Python that is used to inherit new features that will be available in the new Python versions.. This module includes all the latest functions which were not present in the previous version in Python. And we can use this by importing the __future__ module. Its rele...	[ { "code": null, "e": 24212, "s": 24184, "text": "\n17 Oct, 2021" }, { "code": null, "e": 24351, "s": 24212, "text": "__future__ module is a built-in module in Python that is used to inherit new features that will be available in the new Python versions.. " }, { "code": nu...
C library function - localtime()	The C library function struct tm localtime(const time_t timer) uses the time pointed by timer to fill a tm structure with the values that represent the corresponding local time. The value of timer is broken up into the structure tm and expressed in the local time zone. Following is the declaration for localtime() fun...	[ { "code": null, "e": 2279, "s": 2007, "text": "The C library function struct tm localtime(const time_t timer) uses the time pointed by timer to fill a tm structure with the values that represent the corresponding local time. The value of timer is broken up into the structure tm and expressed in th...
Change the dimension of a NumPy array - GeeksforGeeks	29 Aug, 2020 Let’s discuss how to change the dimensions of an array. In NumPy, this can be achieved many ways. Let’s discuss each of them. Method #1: Using Shape() Syntax : array_name.shape() Python3 # importing numpyimport numpy as np def main(): # initialising array print('Initialised array') gfg = np...	[ { "code": null, "e": 23901, "s": 23873, "text": "\n29 Aug, 2020" }, { "code": null, "e": 24028, "s": 23901, "text": "Let’s discuss how to change the dimensions of an array. In NumPy, this can be achieved many ways. Let’s discuss each of them. " }, { "code": null, "e":...
Modify array such that the array does not contain any common divisors other than 1 - GeeksforGeeks	14 Feb, 2022 Given an array arr[] consisting of N integers and an integer X, the task is to check if it is possible to modify the array such that the array does not contain any common divisor other than 1, by repeatedly dividing any array element of the array by any of its divisor d (d ≤ X). If it is possible to modify...	[ { "code": null, "e": 24716, "s": 24688, "text": "\n14 Feb, 2022" }, { "code": null, "e": 25120, "s": 24716, "text": "Given an array arr[] consisting of N integers and an integer X, the task is to check if it is possible to modify the array such that the array does not contain any...
What are MySQL joins?	As we know that MySQL SELECT can be used to retrieve information from a single table at a time but all the questions cannot be answered using just one table. So for the above said purpose i.e. drawing on information stored in multiple tables, we can use Join operation. Basically, MySQL join is a method of linking data ...	[ { "code": null, "e": 1332, "s": 1062, "text": "As we know that MySQL SELECT can be used to retrieve information from a single table at a time but all the questions cannot be answered using just one table. So for the above said purpose i.e. drawing on information stored in multiple tables, we can use...
Go - Interfaces	Go programming provides another data type called interfaces which represents a set of method signatures. The struct data type implements these interfaces to have method definitions for the method signature of the interfaces. /* define an interface */ type interface_name interface { method_name1 [return_type] meth...	[ { "code": null, "e": 2162, "s": 1937, "text": "Go programming provides another data type called interfaces which represents a set of method signatures. The struct data type implements these interfaces to have method definitions for the method signature of the interfaces." }, { "code": null, ...
Count rows based on condition in Pyspark Dataframe - GeeksforGeeks	29 Jun, 2021 In this article, we will discuss how to count rows based on conditions in Pyspark dataframe. For this, we are going to use these methods: Using where() function. Using filter() function. Creating Dataframe for demonstration: Python3 # importing module import pyspark # importing spark...	[ { "code": null, "e": 24284, "s": 24253, "text": " \n29 Jun, 2021\n" }, { "code": null, "e": 24377, "s": 24284, "text": "In this article, we will discuss how to count rows based on conditions in Pyspark dataframe." }, { "code": null, "e": 24422, "s": 24377, "te...
How can I use goto statement in JavaScript?	JavaScript goto statement is a reserved keyword. Generally, according to web standards it isn’t considered a good practice to use goto statement. Using goto with JavaScript preprocessing is still considered good as shown below. var a = 0; [lbl] beginning: console.log("Demo Text!"); a++; if(i < 424) goto beginning; The ...	[ { "code": null, "e": 1208, "s": 1062, "text": "JavaScript goto statement is a reserved keyword. Generally, according to web standards it isn’t considered a good practice to use goto statement." }, { "code": null, "e": 1290, "s": 1208, "text": "Using goto with JavaScript preproces...
Maximum consecutive repeating character in string in C++	We are given a string of alphabets. The task is to find the character which has the longest consecutive repetitions occurring in string. Let’s understand with examples. Input− String[] = “abbbabbbbcdd” Output − b Explanation − In the above string, the longest consecutive sequence is of character ‘b’. Count of consecuti...	[ { "code": null, "e": 1231, "s": 1062, "text": "We are given a string of alphabets. The task is to find the character which has the longest consecutive repetitions occurring in string. Let’s understand with examples." }, { "code": null, "e": 1264, "s": 1231, "text": "Input− String...
Working with csv files in Python Programming	The CSV file or comma separated values file are one of the most widely used flat files to store and hare data across platforms. The columns are separated by comma and there is optional header row also which will indicate the name of each column. Python can read the CSV files using many modules. In this article we will ...	[ { "code": null, "e": 1519, "s": 1062, "text": "The CSV file or comma separated values file are one of the most widely used flat files to store and hare data across platforms. The columns are separated by comma and there is optional header row also which will indicate the name of each column. Python ...
Graph Theory - Quick Guide	In the domain of mathematics and computer science, graph theory is the study of graphs that concerns with the relationship among edges and vertices. It is a popular subject having its applications in computer science, information technology, biosciences, mathematics, and linguistics to name a few. Without further ado, ...	[ { "code": null, "e": 2322, "s": 1966, "text": "In the domain of mathematics and computer science, graph theory is the study of graphs that concerns with the relationship among edges and vertices. It is a popular subject having its applications in computer science, information technology, biosciences...
Python math function \| sqrt() - GeeksforGeeks	11 Jan, 2018 sqrt() function is an inbuilt function in Python programming language that returns the square root of any number. Syntax: math.sqrt(x) Parameter: x is any number such that x>=0 Returns: It returns the square root of the number passed in the parameter. # Python3 program to demonstrate the # sqrt() met...	[ { "code": null, "e": 23979, "s": 23951, "text": "\n11 Jan, 2018" }, { "code": null, "e": 24093, "s": 23979, "text": "sqrt() function is an inbuilt function in Python programming language that returns the square root of any number." }, { "code": null, "e": 24237, "...
Dart - Super and This keyword - GeeksforGeeks	08 Mar, 2022 In Dart, super keyword is used to refer immediate parent class object. It is used to call properties and methods of the superclass. It does not call the method, whereas when we create an instance of subclass than that of the parent class is created implicitly so super keyword calls that instance. Advantage...	[ { "code": null, "e": 23635, "s": 23607, "text": "\n08 Mar, 2022" }, { "code": null, "e": 23933, "s": 23635, "text": "In Dart, super keyword is used to refer immediate parent class object. It is used to call properties and methods of the superclass. It does not call the method, wh...
SWING - Event Classes	Event classes represent the event. Java provides various Event classes, however, only those which are more frequently used will be discussed. It is the root class from which all event state objects shall be derived. All Events are constructed with a reference to the object, the source, that is logically deemed to be th...	[ { "code": null, "e": 1905, "s": 1763, "text": "Event classes represent the event. Java provides various Event classes, however, only those which are more frequently used will be discussed." }, { "code": null, "e": 2194, "s": 1905, "text": "It is the root class from which all even...
Decision Trees: A step-by-step approach to building DTs \| by Gokul S Kumar \| Towards Data Science	Decision Trees (DTs) are a non-parametric supervised learning method used for classification and regression. The goal is to create a model that predicts the value of a target variable by learning simple decision rules inferred from the data features. Decision trees are commonly used in operations research, specifically...	[ { "code": null, "e": 621, "s": 172, "text": "Decision Trees (DTs) are a non-parametric supervised learning method used for classification and regression. The goal is to create a model that predicts the value of a target variable by learning simple decision rules inferred from the data features. Deci...
Inplace operator in Python	Definition - In-place operation is an operation that changes directly the content of a given linear algebra, vector, matrices(Tensor) without making a copy. The operators which helps to do the operation is called in-place operator. Eg: a+= b is equivalent to a= operator.iadd(a, b) There are some operators are used fo...	[ { "code": null, "e": 1294, "s": 1062, "text": "Definition - In-place operation is an operation that changes directly the content of a given linear algebra, vector, matrices(Tensor) without making a copy. The operators which helps to do the operation is called in-place operator." }, { "code":...
Default Assignment Operator and References in C++ - GeeksforGeeks	27 Dec, 2021 We have discussed assignment operator overloading for dynamically allocated resources here. In this article, we discussed that when we don’t write our own assignment operator, the compiler creates an assignment operator itself that does shallow copy and thus causes problems. The difference between shallow ...	[ { "code": null, "e": 24853, "s": 24825, "text": "\n27 Dec, 2021" }, { "code": null, "e": 25402, "s": 24853, "text": "We have discussed assignment operator overloading for dynamically allocated resources here. In this article, we discussed that when we don’t write our own assignme...
Angular CLI - ng serve Command	This chapter explains the syntax, argument and options of ng serve command along with an example. The syntax for ng serve command is as follows − ng serve <project> [options] ng s <project> [options] ng serve command builds and serve the application. It rebuilds the application if changes occur. Here project is the na...	[ { "code": null, "e": 2173, "s": 2075, "text": "This chapter explains the syntax, argument and options of ng serve command along with an example." }, { "code": null, "e": 2221, "s": 2173, "text": "The syntax for ng serve command is as follows −" }, { "code": null, "e":...
RSpec - Quick Guide	RSpec is a unit test framework for the Ruby programming language. RSpec is different than traditional xUnit frameworks like JUnit because RSpec is a Behavior driven development tool. What this means is that, tests written in RSpec focus on the “behavior” of an application being tested. RSpec does not put emphasis on, h...	[ { "code": null, "e": 2222, "s": 1794, "text": "RSpec is a unit test framework for the Ruby programming language. RSpec is different than traditional xUnit frameworks like JUnit because RSpec is a Behavior driven development tool. What this means is that, tests written in RSpec focus on the “behavior...
Decision Tree Algorithm in Python From Scratch \| by Eligijus Bujokas \| Towards Data Science	The aim of this article is to make all the parts of a decision tree classifier clear by walking through the code that implements the algorithm. The code uses only NumPy, Pandas and the standard python libraries. The full code can be accessed via https://github.com/Eligijus112/decision-tree-python As of now, the code cr...	[ { "code": null, "e": 384, "s": 172, "text": "The aim of this article is to make all the parts of a decision tree classifier clear by walking through the code that implements the algorithm. The code uses only NumPy, Pandas and the standard python libraries." }, { "code": null, "e": 470, ...
How to use appbar layout in android?	This example demonstrate about How to use appbar layout in android Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main.xml. <?xml version = "1.0" encoding = "utf-8"?> <android.support...	[ { "code": null, "e": 1129, "s": 1062, "text": "This example demonstrate about How to use appbar layout in android" }, { "code": null, "e": 1258, "s": 1129, "text": "Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a...
Top 22 Podcasts for Data Science in 2021 \| by Benedict Neo \| Towards Data Science	Podcasts are one of the best methods to learn new things and a handy tool for cultivating curiosity and passion. I love listening to TED radio hour in my commute on the train and on my walks. This ensures that I have my daily dose of knowledge and that I go to bed smarter than when I woke up, something I picked up from...	[ { "code": null, "e": 544, "s": 172, "text": "Podcasts are one of the best methods to learn new things and a handy tool for cultivating curiosity and passion. I love listening to TED radio hour in my commute on the train and on my walks. This ensures that I have my daily dose of knowledge and that I ...
How to build a Streamlit UI to Analyze Different Classifiers on the Wine, Iris and Breast Cancer Dataset \| by Rahul Banerjee \| Towards Data Science	In this tutorial, we will be working with three datasets (Iris, Breast Cancer, Wine) We will use 3 different models (KNN, SVM, Random Forest) for classification and give the user the ability to set some parameters. pip install virtualenv /* Install virtual environment /virtualenv venv / Create a virtual envi...	[ { "code": null, "e": 256, "s": 171, "text": "In this tutorial, we will be working with three datasets (Iris, Breast Cancer, Wine)" }, { "code": null, "e": 386, "s": 256, "text": "We will use 3 different models (KNN, SVM, Random Forest) for classification and give the user the abi...
Help function in Python	Many times we need to look into the python documentation for some help on functions, modules etc. Python provides a help function that gives us this needed results. Help(‘term’) Where term is the word on which we want the help. In the below example we seek to find help on the word time. The output comes from python doc...	[ { "code": null, "e": 1227, "s": 1062, "text": "Many times we need to look into the python documentation for some help on functions, modules etc. Python provides a help function that gives us this needed results." }, { "code": null, "e": 1290, "s": 1227, "text": "Help(‘term’)\nWhe...
Formatting Axes in Python-Matplotlib - GeeksforGeeks	22 Jun, 2020 Matplotlib is a python library for creating static, animated and interactive data visualizations. Note: For more information, refer to Introduction to Matplotlib This is what you think of as ‘plot’. It is the region of the image that contains the data space. The Axes contains two or three-axis(in case of 3...	[ { "code": null, "e": 24942, "s": 24914, "text": "\n22 Jun, 2020" }, { "code": null, "e": 25040, "s": 24942, "text": "Matplotlib is a python library for creating static, animated and interactive data visualizations." }, { "code": null, "e": 25104, "s": 25040, "...
Date.getDate() function in JavaScript	The Date object is a data type built into the JavaScript language. Date objects are created with the new Date( ) as shown below. Once a Date object is created, a number of methods allow you to operate on it. Most methods simply allow you to get and set the year, month, day, hour, minute, second, and millisecond fields ...	[ { "code": null, "e": 1191, "s": 1062, "text": "The Date object is a data type built into the JavaScript language. Date objects are created with the new Date( ) as shown below." }, { "code": null, "e": 1454, "s": 1191, "text": "Once a Date object is created, a number of methods al...
Maximum Intervals Overlap \| Practice \| GeeksforGeeks	Consider a big party where N guests came to it and a log register for guest’s entry and exit times was maintained. Find the minimum time at which there were maximum guests at the party. Note that entries in the register are not in any order. Note: Guests are leaving after the exit times. Example 1: Input: N = 5 Entry= ...	[ { "code": null, "e": 480, "s": 238, "text": "Consider a big party where N guests came to it and a log register for guest’s entry and exit times was maintained. Find the minimum time at which there were maximum guests at the party. Note that entries in the register are not in any order." }, { ...
How can we create a MySQL view with a subquery?	To illustrate the making of MySQL view with subquery we are using the following data from the table ‘Cars’ − mysql> select * from cars; +------+--------------+---------+ \| ID \| Name \| Price \| +------+--------------+---------+ \| 1 \| Nexa \| 750000 \| \| 2 \| Maruti Swift \| 450000 \| \| 3 \| BMW ...	[ { "code": null, "e": 1171, "s": 1062, "text": "To illustrate the making of MySQL view with subquery we are using the following data from the table ‘Cars’ −" }, { "code": null, "e": 1631, "s": 1171, "text": "mysql> select * from cars;\n+------+--------------+---------+\n\| ID \| N...
Puppeteer - Getting Element Text	We can get element text in Puppeteer. This is done with the help of the textContent property. This property of the element is passed as a parameter to the getProperty method. The syntax of getting element text is as follows − const n = await page.$("#txt") const t = await (await n.getProperty('textContent')).jsonValue(...	[ { "code": null, "e": 2925, "s": 2750, "text": "We can get element text in Puppeteer. This is done with the help of the textContent property. This property of the element is passed as a parameter to the getProperty method." }, { "code": null, "e": 2976, "s": 2925, "text": "The syn...
Python Numbers	There are three numeric types in Python: int float complex Variables of numeric types are created when you assign a value to them: To verify the type of any object in Python, use the type() function: Int, or integer, is a whole number, positive or negative, without decimals, of unlimited length. Integers: Float, or "f...	[ { "code": null, "e": 41, "s": 0, "text": "There are three numeric types in Python:" }, { "code": null, "e": 45, "s": 41, "text": "int" }, { "code": null, "e": 51, "s": 45, "text": "float" }, { "code": null, "e": 59, "s": 51, "text": "comple...
Python: Hamiltonian Monte Carlo from scratch \| by Jake \| Towards Data Science	If your experience with Markov Chain Monte Carlo (MCMC) methods has been anything like mine, it’s been an endless search for answers. Every time you get an answer to one question, a dozen more pop up! You’re continuously learning how much you don’t know. I recently accepted a full time role as data scientist at an orga...	[ { "code": null, "e": 792, "s": 172, "text": "If your experience with Markov Chain Monte Carlo (MCMC) methods has been anything like mine, it’s been an endless search for answers. Every time you get an answer to one question, a dozen more pop up! You’re continuously learning how much you don’t know. ...
JavaFX example to set action listeners to a CheckBox	A checkbox is a type of selection control, which is square in shape with a tick mark int it, It has three states checked or, unchecked and, tristate/indeterminate (optional). In JavaFX a checkbox is represented by the javafx.scene.control.CheckBox class. This class has three boolean properties namely allowIndeterminate...	[ { "code": null, "e": 1237, "s": 1062, "text": "A checkbox is a type of selection control, which is square in shape with a tick mark int it, It has three states checked or, unchecked and, tristate/indeterminate (optional)." }, { "code": null, "e": 1414, "s": 1237, "text": "In Java...
Volatility Trading 101. An intuitive guide to delta hedging \| by Roman Paolucci \| Towards Data Science	A large client wants to purchase 100,000 AAPL call options with the following parameters: Strike Price: 350 Spot Price: 320 Implied Volatility: 30% Risk-free rate: 8% Time until expiration: 1 year You decide to consult your team. Your team has research suggesting that realized volatility will be less than the volatilit...	[ { "code": null, "e": 262, "s": 172, "text": "A large client wants to purchase 100,000 AAPL call options with the following parameters:" }, { "code": null, "e": 280, "s": 262, "text": "Strike Price: 350" }, { "code": null, "e": 296, "s": 280, "text": "Spot Pric...
Matplotlib - Setting Ticks and Tick Labels - GeeksforGeeks	26 Dec, 2020 In this article, we are going to discuss how set Ticks and Tick labels in a graph. Ticks are the markers denoting data points on the axes and tick labels are the name given to ticks. By default matplotlib itself marks the data points on the axes but it has also provided us with setting their own axes havin...	[ { "code": null, "e": 25537, "s": 25509, "text": "\n26 Dec, 2020" }, { "code": null, "e": 25620, "s": 25537, "text": "In this article, we are going to discuss how set Ticks and Tick labels in a graph." }, { "code": null, "e": 25885, "s": 25620, "text": "Ticks a...
numpy.equal() in Python - GeeksforGeeks	04 Jan, 2022 numpy.equal(arr1, arr2, out = None, where = True, casting = ‘same_kind’, order = ‘K’, dtype = None, ufunc ‘not_equal’) : This logical function checks for arr1 == arr2 element-wise. Parameters : arr1 : [array_like]Input arrayarr2 : [array_like]Input array out : [ndarray, optional]Output array with same dime...	[ { "code": null, "e": 26399, "s": 26371, "text": "\n04 Jan, 2022" }, { "code": null, "e": 26580, "s": 26399, "text": "numpy.equal(arr1, arr2, out = None, where = True, casting = ‘same_kind’, order = ‘K’, dtype = None, ufunc ‘not_equal’) : This logical function checks for arr1 == a...
Check if the given string is vowel prime - GeeksforGeeks	10 May, 2021 Given a string str of lowercase English alphabets, the task is to check whether the string is a vowel prime or not. A string is said to be vowel prime if all the vowels in the string appear at only prime indices.Examples: Input: str = “geeksforgeeks” Output: No str[1] = ‘e’ is a vowel but 1 is not prime....	[ { "code": null, "e": 26099, "s": 26071, "text": "\n10 May, 2021" }, { "code": null, "e": 26323, "s": 26099, "text": "Given a string str of lowercase English alphabets, the task is to check whether the string is a vowel prime or not. A string is said to be vowel prime if all the v...
Sequence with examples in SQL Server - GeeksforGeeks	03 Sep, 2020 Sequence :A sequence is a list of numbers, in an ordered manner. For example, {1, 2, 3} is a sequence and {3, 2, 1} is also sequence but a different sequence. It is a user-defined schema object that produces a list of numbers in accordance to specified value in SQL server. Syntax : CREATE SEQUENCE schema_n...	[ { "code": null, "e": 25513, "s": 25485, "text": "\n03 Sep, 2020" }, { "code": null, "e": 25672, "s": 25513, "text": "Sequence :A sequence is a list of numbers, in an ordered manner. For example, {1, 2, 3} is a sequence and {3, 2, 1} is also sequence but a different sequence." }...