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Why were pandas merges in python faster than data.table merges in R in 2012?

...n global string hash table. Some benchmark results are already reported by test.data.table() but that code isn't hooked up yet to replace the levels to levels match. Are pandas merges faster than data.table for regular integer columns? That should be a way to isolate the algorithm itself vs factor...
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Design by contract using assertions or exceptions? [closed]

...member, an error that occurs at the customer’s site made it through your testing process. You’ll probably have trouble reproducing it. These errors are the hardest to find, and a well-placed assertion explaining the problem could save you days of effort." – StriplingWarrior...
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How to dynamically change header based on AngularJS partial view?

... controller inject $rootScope and set a header property on this: function Test1Ctrl($rootScope, $scope, $http) { $rootScope.header = "Test 1"; } function Test2Ctrl($rootScope, $scope, $http) { $rootScope.header = "Test 2"; } and in your page: <title ng-bind="header"></title> ...
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Java lib or app to convert CSV to XML file? [closed]

...g the same sample data as above, code would look like: package fr.megiste.test; import java.io.FileReader; import java.io.FileWriter; import java.util.ArrayList; import java.util.List; import au.com.bytecode.opencsv.CSVReader; import com.thoughtworks.xstream.XStream; public class CsvToXml { ...
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Selenium WebDriver: Wait for complex page with JavaScript to load

I have a web application to test with Selenium. There is a lot of JavaScript running on page load. This JavaScript code is not so well written but I can't change anything. So waiting for an element to appear in the DOM with findElement() method is not an option. I want to create a generic func...
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Which comment style should I use in batch files?

...uces a problem in a FOR loop. This example will not work in a file called test.bat on your desktop: @echo off for /F "delims=" %%A in ('type C:\Users\%username%\Desktop\test.bat') do ( ::echo hello>C:\Users\%username%\Desktop\text.txt ) pause While this example will work as a comment corr...
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Getting error while sending email through Gmail SMTP - “Please log in via your web browser and then

...the letters in the distorted picture. Your app might not support the latest security standards. Try changing a few settings to allow less secure apps access to your account. Make sure your mail app isn't set to check for new email too often. If your mail app checks for new messages mo...
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TypeError: Missing 1 required positional argument: 'self'

...here. Use p = Pump() p.getPumps() Small example - >>> class TestClass: def __init__(self): print("in init") def testFunc(self): print("in Test Func") >>> testInstance = TestClass() in init >>> testInstance.testFunc() in Test ...
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How to use a class from one C# project with another C# project

... I have just tried myself building the project. I just made a whole SLN to test if it worked. I made this in VC# VS2008 << ( Just helping other people that read this aswell with () comments ) Step1: Make solution called DoubleProject Step2: Make Project in solution named DoubleProjec...
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How to provide different Android app icons for different gradle buildTypes?

...ifest> build.gradle android { ... productFlavors{ Test{ versionName "$defaultConfig.versionName" + ".test" resValue "string", "app_name", "App-Test" manifestPlaceholders = [ appIcon: "@mipmap/ic_launcher_test", ...