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What is the best way to clear a session variable in rails?

Is this is the best way to destroy a session variable. 1 Answer 1 ...
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Get an object properties list in Objective-C

How can I get a list (in the form of an NSArray or NSDictionary ) of a given object properties in Objective-C? 13 Answ...
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What's the difference between streams and datagrams in network programming?

What's the difference between sockets (stream) vs sockets (datagrams)? Why use one over the other? 3 Answers ...
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Why are two different concepts both called “heap”?

Why are the runtime heap used for dynamic memory allocation in C-style languages and the data structure both called "the heap"? Is there some relation? ...
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How can I select every other line with multiple cursors in Sublime Text?

In Sublime Text 2, is it possible to instantly select every other (or odd/even) line and place multiple cursors on those lines? ...
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JSONDecodeError: Expecting value: line 1 column 1 (char 0)

I am getting error Expecting value: line 1 column 1 (char 0) when trying to decode JSON. 16 Answers ...
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Rails: how do I validate that something is a boolean?

Does rails have a validator like validates_numericality_of for boolean or do I need to roll my own? 5 Answers ...
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How to use querySelectorAll only for elements that have a specific attribute set?

I'm trying to use document.querySelectorAll for all checkboxes that have the value attribute set. 3 Answers ...
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PHP - Merging two arrays into one array (also Remove Duplicates)

Hi I'm Trying to merge two arrays and also want to remove duplicate values from final Array. 5 Answers ...
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Concatenate two string literals

I am reading Accelerated C++ by Koenig. He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals). ...