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What does a space mean in a CSS selector? i.e. What is the difference between .classA.classB and .cl
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What does a tilde in angle brackets mean when creating a Java generic class?
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Why are C++ inline functions in the header?
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The definition of an inline function doesn't have to be in a header file but, because of the one definition rule (ODR) for inline functions, an identical definition for the function must exist in every translation unit that uses it.
The easiest way to achieve th...
How to validate an e-mail address in swift?
Does anyone know how to validate an e-mail address in Swift? I found this code:
34 Answers
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How and why does 'a'['toUpperCase']() in JavaScript work?
...if the property is a number, only the bracket method works. The dot method doesn't.
So 'a' is an object with 'toUpperCase' property which is actually a function. You can retrieve the function and call it subsequently either way: 'a'.toUpperCase() or 'a'['toUpperCase']().
But imo the better way to ...
Why does Maven warn me about encoding?
...en runs the package goal (by default) on this POM.
The generated POM file doesn't have project.build.sourceEncoding or any other property defining encoding, and that's why you get the warning.
The POM is generated from this prototype by org.apache.maven.archetype.creator.FilesetArchetypeCreator#cr...
What does 'foo' really mean?
I hope this qualifies as a programming question, as in any programming tutorial, you eventually come across 'foo' in the code examples. (yeah, right?)
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What does Docker add to lxc-tools (the userspace LXC tools)?
... configuration, it would almost certainly not run on my machine the way it does on yours, because it is tied to your machine's specific configuration: networking, storage, logging, distro, etc. Docker defines an abstraction for these machine-specific settings, so that the exact same docker container...
Does every Javascript function have to return a value?
... I don't believe C++ (or C) "returns a void". The "void" tag indicates it does not return anything. It's a minor point though and has nothing to do with the question asked.
– Jay
Mar 3 '15 at 17:02
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What does “dereferencing” a pointer mean?
...- and additionally in C++ nullptr - can be used to indicate that a pointer doesn't currently hold the memory address of a variable, and shouldn't be dereferenced or used in pointer arithmetic. For example:
const char* p_filename = NULL; // Or "= 0", or "= nullptr" in C++
int c;
while ((c = getopt(a...