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What should main() return in C and C++?
...ment, at which point it defaults to returning 0. This is also true with a C99 program. Whether return 0; should be omitted or not is open to debate. The range of valid C program main signatures is much greater.
Efficiency is not an issue with the main function. It can only be entered and left onc...
Easier way to create circle div than using an image?
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You could also do 100% instead of 999px.
– Tony Wickham
Jul 19 '13 at 5:35
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PHP parse/syntax errors; and how to solve them
... trying to dereference constants (before PHP 5.6) as arrays:
$var = const[123];
⇑
At least PHP interprets that const as a constant name.
If you meant to access an array variable (which is the typical cause here), then add the leading $ sigil - so it becomes a $varname.
You are trying to...
Grunt watch error - Waiting…Fatal error: watch ENOSPC
... && sudo sysctl -p
For Arch Linux add this line to /etc/sysctl.d/99-sysctl.conf:
fs.inotify.max_user_watches=524288
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Precision String Format Specifier In Swift
... Anton TcholakovAnton Tcholakov
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What are all the common undefined behaviours that a C++ programmer should know about? [closed]
...at's UB in C89 (§3.1.3.4) and C++03 (which incorporates C89), but not in C99. C99 says that "the result is not a token and a diagnostic is required" (§6.4.4.4). Presumably C++0x (which incorporates C89) will be the same.
– Adam Rosenfield
Jun 7 '11 at 4:31
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List comprehension vs map
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10000 loops, best of 3: 181/118/123 usec per loop ^^^^^^^^^^^^^^^^^^
for list(<generator>), probably optimized
% python3 -mtimeit -s 'xs=range(1000)' 'f=lambda x:x' 'z=list(f(x) for x in xs)' ...
How can I view MSIL / CIL generated by C# compiler? Why is it called assembly?
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Both have their places, but for most (> 99.99%) users ILSpy is the right choice. Its ability to decompile IL code back to C# ist invaluable for quickly navigating and reverse-engineering assemblies. If you're doing anything that emits raw IL (e.g. you're writing a ...
How to zero pad a sequence of integers in bash so that all have the same width?
...as printf as a built-in so you can pad output with zeroes as follows:
$ i=99
$ printf "%05d\n" $i
00099
You can use the -v flag to store the output in another variable:
$ i=99
$ printf -v j "%05d" $i
$ echo $j
00099
Notice that printf supports a slightly different format to seq so you need to ...
How can I do DNS lookups in Python, including referring to /etc/hosts?
...', 80)), (2, 3, 0, '', ('209.85.229.104', 80)), (2, 1, 6, '', ('209.85.229.99', 80)), (2, 2, 17, '', ('209.85.229.99', 80)), (2, 3, 0, '', ('209.85.229.99', 80)), (2, 1, 6, '', ('209.85.229.147', 80)), (2, 2, 17, '', ('209.85.229.147', 80)), (2, 3, 0, '', ('209.85.229.147', 80))]
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