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push_back vs emplace_back
...h_back(Type&& _Val).
But the real C++0x form of emplace_back is really useful: void emplace_back(Args&&...);
Instead of taking a value_type it takes a variadic list of arguments, so that means that you can now perfectly forward the arguments and construct directly an object into a ...
What's the best way to determine the location of the current PowerShell script?
...acOS, your script must have a .ps1 extension for PSScriptRoot/MyInvocation etc to be populated. See bug report here: github.com/PowerShell/PowerShell/issues/4217
– Dave Wood
Mar 11 '18 at 5:11
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symbolic link: find all files that link to this file
...by some other links... ex: A->B->foo.txt, /tmp/C->B->foo.txt, etc.
– Olivier Dulac
Nov 7 '13 at 17:31
thi...
How to change the default charset of a MySQL table?
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If you want to change the table default character set and all character columns to a new character set, use a statement like this:
ALTER TABLE tbl_name CONVERT TO CHARACTER SET charset_name;
So query will be:
ALTER TABLE etape_prospection CONVERT TO CHARACTER SET utf8;
...
How to change the default GCC compiler in Ubuntu?
I have installed gcc-3.3/g++-3.3 on ubuntu 11.04 which already has gcc/g++-4.4. So in my system both gcc-3.3 and 4.4 are available. I am able to call both compilers as I want. If I just call the command gcc then gcc-4.4 will get called. To call gcc-3.3, I have to use the command gcc-3.3 .
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Why do we need a pure virtual destructor in C++?
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Probably the real reason that pure virtual destructors are allowed is that to prohibit them would mean adding another rule to the language and there's no need for this rule since no ill-effects can come from allowing a pure virtual destructor.
Nope, plain old virtual is enough.
If...
“No X11 DISPLAY variable” - what does it mean?
...aphical environment, try export DISPLAY=:0 for bash like shells (bash, sh, etc) or setenv DISPLAY :0 for C shell based shells (csh, tcsh, etc)
If you've connected from another machine via SSH, you use the -X option to display the graphical interface on the machine you're sitting at (provided there'...
How do I return the response from an asynchronous call?
...ext;
}
If you use any other jQuery Ajax method, such as $.get, $.getJSON, etc., you have to change it to $.ajax (since you can only pass configuration parameters to $.ajax).
Heads up! It is not possible to make a synchronous JSONP request. JSONP by its very nature is always asynchronous (one more r...
Is It Possible to Sandbox JavaScript Running In the Browser?
...ited to iframe granularity.
In general, no degree of regular expressions, etc. can safely sanitise arbitrary user provided JavaScript as it degenerates to the halting problem :-/
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C++ Const Usage Explanation
...his case Method3) you read back-and-forth from left-to-right-back-to-left, etc. in order to decode naming conventions. So const int* const Method3(const int* const&) const is a class method that doesn't change any class members (of some un-named class) and takes a constant reference to a pointe...