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What does -D_XOPEN_SOURCE do/mean?
I recently encountered some code that gcc would not compile without this arg. I checked the gcc man page, but did not find this specific option. I did find XOPEN_SOURCE , but there was little explanation of what it does.
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Update multiple rows in same query using PostgreSQL
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Getting a 'source: not found' error when using source in a bash script
I'm trying to write (what I thought would be) a simple bash script that will:
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NSLog with CGPoint data
I have a CGPoint called point that is being assigned a touch:
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DbArithmeticExpression arguments must have a numeric common type
This Linq expression throws this exception:
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Check whether a variable is a string in Ruby
Is there anything more idiomatic than the following?
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How can I define a composite primary key in SQL?
How can I define a composite primary key consisting of two fields in SQL?
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Regular expression to limit number of characters to 10
I am trying to write a regular expression that will only allow lowercase letters and up to 10 characters. What I have so far looks like this:
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Literal notation for Dictionary in C#?
I currently have a WebSocket between JavaScript and a server programmed in C#. In JavaScript, I can pass data easily using an associative array:
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Difference between final static and static final
I found a code where it declared code like
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