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Why aren't ◎ܫ◎ and ☺ valid JavaScript variable names?
... unfortunately, not in the other browsers I tested), you can use some Unicode variable names. This made my day, and I was absolutely delighted that I could write fun Unicode-laden code like this:
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How do I write stderr to a file while using “tee” with a pipe?
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Learning to write a compiler [closed]
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How to return a string value from a Bash function
...ntf '%q' "$var". %q is a format string for shell escape. Then just pass it raw.
– bb010g
Jul 23 '15 at 21:53
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Does Swift have documentation generation support?
...comments to allow a generator (like javadoc or doxygen ) to generate code documentation by parsing that same code.
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unsigned int vs. size_t
I notice that modern C and C++ code seems to use size_t instead of int / unsigned int pretty much everywhere - from parameters for C string functions to the STL. I am curious as to the reason for this and the benefits it brings.
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Why do you have to link the math library in C?
If I include <stdlib.h> or <stdio.h> in a C program I don't have to link these when compiling but I do have to link to <math.h> , using -lm with gcc, for example:
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What does T&& (double ampersand) mean in C++11?
...ue_ptr. Since a unique_ptr maintains exclusive ownership of its underlying raw pointer, unique_ptr's can't be copied. That would violate their invariant of exclusive ownership. So they do not have copy constructors. But they do have move constructors:
template<class T> class unique_ptr {
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How to use hex color values
... of the few standard ones that UIColor allows you to use, but I have no idea how to do it.
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