大约有 47,000 项符合查询结果（耗时：0.0762秒） [XML]
Query for array elements inside JSON type
...
|
edited Jun 20 at 9:12
Community♦
111 silver badge
answered Mar 29 '14 at 22:25
...
Which, if any, C++ compilers do tail-recursion optimization?
...s such as:
int bar(int, int);
int foo(int n, int acc) {
return (n == 0) ? acc : bar(n - 1, acc + 2);
}
int bar(int n, int acc) {
return (n == 0) ? acc : foo(n - 1, acc + 1);
}
Letting the compiler do the optimisation is straightforward: Just switch on optimisation for speed:
For MSVC,...
How to replace all strings to numbers contained in each string in Notepad++?
... say that you want to match each of the following lines
value="4"
value="403"
value="200"
value="201"
value="116"
value="15"
using the .*"\d+" pattern and want to keep only the number. You can then use a capture group in your matching pattern, using parentheses ( and ), like that: .*"(\d+)". So n...
if, elif, else statement issues in Bash
...
460
There is a space missing between elif and [:
elif[ "$seconds" -gt 0 ]
should be
elif [ "$sec...
python re.sub group: number after \number
...
330
The answer is:
re.sub(r'(foo)', r'\g<1>123', 'foobar')
Relevant excerpt from the docs:
...
how to use “AND”, “OR” for RewriteCond on Apache?
...
120
This is an interesting question and since it isn't explained very explicitly in the documentatio...
“simple” vs “current” push.default in git for decentralized workflow
...hat has the same name:
$ git config push.default current
$ git push
Total 0 (delta 0), reused 0 (delta 0)
To /Documents/GitHub/bare
* [new branch] foo-> foo
The Documentation
From the Git configuration documentation:
upstream - push the current branch to its upstream branch...
...
Checking for the correct number of arguments
...
#!/bin/sh
if [ "$#" -ne 1 ] || ! [ -d "$1" ]; then
echo "Usage: $0 DIRECTORY" >&2
exit 1
fi
Translation: If number of arguments is not (numerically) equal to 1 or the first argument is not a directory, output usage to stderr and exit with a failure status code.
More friendly er...
Unittest setUp/tearDown for several tests
... |
edited Dec 5 '11 at 20:13
answered Dec 5 '11 at 19:56
...
Matplotlib plots: removing axis, legends and white spaces
...
406
I think that the command axis('off') takes care of one of the problems more succinctly than cha...