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How to get a number of random elements from an array?

I am working on 'how to access elements randomly from an array in javascript'. I found many links regarding this. Like: Get random item from JavaScript array ...
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What's the best way to check if a String represents an integer in Java?

I normally use the following idiom to check if a String can be converted to an integer. 38 Answers ...
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Is there a difference between x++ and ++x in java?

Is there a difference between ++x and x++ in java? 16 Answers 16 ...
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Equivalent of varchar(max) in MySQL?

What is the equivalent of varchar(max) in MySQL? 6 Answers 6 ...
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How can I autoplay a video using the new embed code style for Youtube?

I can't work out how to autoplay a video using the new embed code style for Youtube . I tried adding &autoplay=1 to the url, which worked with the old style, but it didn't work. For example, http://www.youtube.com/embed/JW5meKfy3fY is the embed link, but http://www.youtube.com/embed/JW5meKfy3fY&...
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How do you use the ellipsis slicing syntax in Python?

This came up in Hidden features of Python , but I can't see good documentation or examples that explain how the feature works. ...
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SQL Server 2008 Windows Auth Login Error: The login is from an untrusted domain

When attempting to connect to a SQL Server 2008 Instance using Management Studio, I get the following error: 35 Answers ...
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Creating JS object with Object.create(null)?

I know a lot of ways to create JS objects but I didn't know the Object.create(null) 's one. 5 Answers ...
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Procedure expects parameter which was not supplied

I'm getting the error when accessing a Stored Procedure in SQL Server 12 Answers 12 ...
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What is the Python equivalent of static variables inside a function?

What is the idiomatic Python equivalent of this C/C++ code? 26 Answers 26 ...