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How to split data into training/testing sets using sample function

I've just started using R and I'm not sure how to incorporate my dataset with the following sample code: 23 Answers ...
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The default for KeyValuePair

I have an object of the type IEnumerable<KeyValuePair<T,U>> keyValueList , I am using 7 Answers ...
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Is there a “do … until” in Python? [duplicate]

Is there a 4 Answers 4 ...
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Git Commit Messages: 50/72 Formatting

Tim Pope argues for a particular Git commit message style in his blog post: http://www.tpope.net/node/106 . 5 Answers ...
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How to do parallel programming in Python?

For C++, we can use OpenMP to do parallel programming; however, OpenMP will not work for Python. What should I do if I want to parallel some parts of my python program? ...
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How can I do string interpolation in JavaScript?

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Fixed size queue which automatically dequeues old values upon new enques

I'm using ConcurrentQueue for a shared data structure which purpose is holding the last N objects passed to it (kind of history). ...
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Syntax of for-loop in SQL Server

What is the syntax of a for loop in TSQL? 9 Answers 9 ...
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How to create PDF files in Python [closed]

I'm working on a project which takes some images from user and then creates a PDF file which contains all of these images. ...
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C# Java HashMap equivalent

Coming from a Java world into a C# one is there a HashMap equivalent? If not what would you recommend? 7 Answers ...