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When someone writes a new programming language, what do they write it IN?

Please excuse my ignorance. I'm dabbling in PHP and getting my feet wet browsing SO, and feel compelled to ask a question that I've been wondering about for years: ...
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Relational table naming convention [closed]

I'm starting a new project and would like to get my table- and column names right from the start. For example I've always used plural in table names but recently learned singular is correct. ...
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How to check if a map contains a key in Go?

I know I can iterate over a map m by, 10 Answers 10 ...
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Why are arrays covariant but generics are invariant?

From Effective Java by Joshua Bloch, 9 Answers 9 ...
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How can I safely encode a string in Java to use as a filename?

I'm receiving a string from an external process. I want to use that String to make a filename, and then write to that file. Here's my code snippet to do this: ...
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How to generate random SHA1 hash to use as ID in node.js?

I am using this line to generate a sha1 id for node.js: 4 Answers 4 ...
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Setting variable to NULL after free

In my company there is a coding rule that says, after freeing any memory, reset the variable to NULL . For example ... 23 ...
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In Django, how does one filter a QuerySet with dynamic field lookups?

Given a class: 4 Answers 4 ...
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On a CSS hover event, can I change another div's styling? [duplicate]

When I hover over a div or class with an id of "a", can I get the background color of a div or class with the id of "b" to change? ...
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Is there a way to provide named parameters in a function call in JavaScript?

I find the named parameters feature in C# quite useful in some cases. 10 Answers 10 ...