大约有 6,000 项符合查询结果（耗时：0.0306秒） [XML]
How to sum array of numbers in Ruby?
...
David Wolever
123k7676 gold badges297297 silver badges462462 bronze badges
answered Oct 8 '09 at 16:28
jomeyjomey
...
How to scroll up or down the page to an anchor using jQuery?
...answered Dec 23 '11 at 11:35
ade123ade123
2,36366 gold badges24
Ordering by the order of values in a SQL IN() clause
...
Two solutions that spring to mind:
order by case id when 123 then 1 when 456 then 2 else null end asc
order by instr(','||id||',',',123,456,') asc
(instr() is from Oracle; maybe you have locate() or charindex() or something like that)
...
Installing PG gem on OS X - failure to build native extension
...any others have had problems installing the pg gem. None of the solutions posed for others have worked for me.
15 Answers
...
Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
...he tendency to generate noticeably faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), and I have been wondering ever since why.
...
Install a Windows service using a Windows command prompt?
...
If the directory's name has a space like c:\program files\abc 123, then you must use double quotes around the path.
installutil.exe "c:\program files\abc 123\myservice.exe"
It makes things much easier if you set up a bat file like following,
e.g. To install a service, create a "my...
How do I check OS with a preprocessor directive?
...
The Predefined Macros for OS site has a very complete list of checks. Here are a few of them, with links to where they're found:
Windows
_WIN32 Both 32 bit and 64 bit
_WIN64 64 bit only
Unix (Linux, *BSD, Mac OS X)
See this relate...
Histogram Matplotlib
...ered Sep 4 '13 at 10:15
Matthias123Matthias123
79266 silver badges1313 bronze badges
...
Find full path of the Python interpreter?
...will return the correct full binary path via sys.executable. Perhaps your OS or Python version behaves slightly differently.
– kevinarpe
May 22 '15 at 12:56
28
...
Correct approach to global logging in Golang
...
Create a single log.Logger and pass it around?
That is possible. A log.Logger can be used concurrently from multiple goroutines.
Pass around a pointer to that log.Logger?
log.New returns a *Logger which is usually an indication that you should pass the object around as...