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What does @: (at symbol colon) mean in a Makefile?
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It means "don't echo this command on the output." So this rule is saying "execute the shell command : and don't echo the output.
Of course the shell command : is a no-op, so this is saying "do nothing, and don't tell."
Why?
The trick here is that ...
arrow operator (->) in function heading
...es. So you try:
template <typename T1, typename T2>
decltype(a + b) compose(T1 a, T2 b);
and the compiler will tell you that it does not know what a and b are in the decltype argument. That is because they are only declared by the argument list.
You could easily work around the problem by ...
In Unix, can I run 'make' in a directory without cd'ing to that directory first?
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101
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Undoing a commit in TortoiseSVN
I committed a bunch of files (dozens of files in different folders) by accident. What is the easiest, cleanest (and safest!) way to 'undo' that commit without having to delete the files from my working directory?
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When editing Microsoft Office VBA, how can I disable the popup “Compile error” messages?
... syntactically valid, the VBA editor interrupts your work by popping up a "Compile error" message that has to be dismissed.
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PendingIntent does not send Intent extras
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21
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Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad?
... The Unladen Swallow team has given up on removing the GIL: code.google.com/p/unladen-swallow/wiki/…
– Seun Osewa
Mar 20 '10 at 20:25
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How to use querySelectorAll only for elements that have a specific attribute set?
...d by MDN it "is a string containing one or more CSS selectors separated by commas". You can read about CSS Selectors here.
– martieva
Oct 21 '16 at 14:52
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assertEquals vs. assertEqual in python
...point, failUnlessEqual is explicitly deprecated. assertEquals carries this comment :-)
# Synonyms for assertion methods
# The plurals are undocumented. Keep them that way to discourage use.
# Do not add more. Do not remove.
# Going through a deprecation cycle on these would anno...