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c++11 Return value optimization or move? [duplicate]
...Foo f()
{
Foo result;
mangle(result);
return result;
}
This will already allow the use of the move constructor, if one is available. In fact, a local variable can bind to an rvalue reference in a return statement precisely when copy elision is allowed.
Your second version actively prohibits...
How to display gpg key details without importing it?
...s you can get when looking at OpenPGP key data: a basic summary, a machine-readable output of this summary or a detailed (and very technical) list of the individual OpenPGP packets.
Basic Key Information
For a brief peak at an OpenPGP key file, you can simply pass the filename as parameter or pipe...
Determining 32 vs 64 bit in C++
...y library stuff that requires no compiler change. Even the stuff that's already being done when compiling for C++ (like declarations after statements). I know it needs testing, etc., but I also know that MS gets (or once got) a fair chunk of its library from Dinkumware/Plauger, and Dinkumware's had...
How to import other Python files?
...se a different import file as example all the times makes it cumbersome to read.
– gented
Mar 21 '17 at 21:59
3
...
Bash, no-arguments warning, and case decisions
...I have several scripts that work as intended using this exact format. Upon reading your response I even retested both for the match and lack thereof. $# will not contain a value if not specified, if there is no positional argument to match what ever # is in your scenario. It makes no sense why bash...
Creating functions in a loop
...tion():
print(global_var)
global_var = 'bar'
my_function()
When you read this code, you would - of course - expect it to print "bar", not "foo", because the value of global_var has changed after the function was declared. The same thing is happening in your own code: By the time you call f, t...
node.js global variables?
...t all kinds of nasty hacks into short-lived projects that were write-once, read-never (and "single-developer"). In a bigger project, that sort of corner cutting ends up costing you project momentum.
– Dave Dopson
Aug 14 '12 at 18:00
...
What's the point of 'meta viewport user-scalable=no' in the Google Maps API
...ges with a viewport tag set like that. This allows them to get rid of the dreaded 300ms delay on touch events that the browser takes to wait and see if your single touch will end up being a double touch. (Think "single click" and "double click".) However, when this question was originally asked (in ...
Are email addresses case sensitive?
I've read that by standard first part of e-mail is case sensitive, however I've tried to send e-mail to name@example.com , Name@example.com and NAME@example.com - it has arrived in each case.
...
Returning JSON from PHP to JavaScript?
...wer'' in quotes really just wound me up, it was 10 years ago, let it die already. I've moved on from PHP so long ago that the language I moved to I'm now also moving away from. )
– Kent Fredric
Jun 13 '19 at 10:13
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