大约有 23,000 项符合查询结果（耗时：0.0770秒） [XML]
How can one print a size_t variable portably using the printf family?
...Rosenfield
346k9090 gold badges477477 silver badges564564 bronze badges
7
...
list.clear() vs list = new ArrayList(); [duplicate]
... @RMT : Answer sounds unarguable.
– theapache64
May 20 '16 at 10:32
Sure, if the list is big or not, a clear h...
Creating a zero-filled pandas data frame
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
WAMP/XAMPP is responding very slow over localhost
...check this by pressing CTRL+ALT+DEL and press Task Manager
Turn off the Base Filtering Engine (BFE)
What I find to be working a bit as well was turning off the Base Filtering Engine. Since stopping or disabling the BFE service will significantly reduce the security of the system you should only ...
Twitter image encoding challenge [closed]
...requires the GMP library for bignum arithmetic for its string encoding.
I based my solution off of fractal image compression, with a few unique twists. The basic idea is to take the image, scale down a copy to 50% and look for pieces in various orientations that look similar to non-overlapping blo...
Objective-C : BOOL vs bool
...
From the definition in objc.h:
#if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH
typedef bool BOOL;
#else
typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even if -funsigned-char is used.
#endif
#define YES ((BOOL)1)
#define NO...
Windows can't find the file on subprocess.call()
...g. dir or copy). You do not need shell=True to run a batch file or console-based executable.
share
|
improve this answer
|
follow
|
...
Make HTML5 video poster be same size as video itself
...or preloading but without requiring a separate transparent image. We use a base64 encoded 1px transparent image instead.
<style type="text/css" >
video{
background: transparent url("poster.jpg") 50% 50% / cover no-repeat ;
}
</style>
<video controls poster="data:image...
Tricks to manage the available memory in an R session
... available memory of an interactive R session? I use the functions below [based on postings by Petr Pikal and David Hinds to the r-help list in 2004] to list (and/or sort) the largest objects and to occassionally rm() some of them. But by far the most effective solution was ... to run under 64-bi...
How to debug Lock wait timeout exceeded on MySQL?
...4, 8 row lock(s), undo log entries 1
MySQL thread id 3686635, query id 124164167 10.64.89.145 viget updating
DELETE FROM file WHERE file_id in ('6dbafa39-7f00-0001-51f2-412a450be5cc' )
Foreign key constraint fails for table `backoffice`.`attachment`:
,
CONSTRAINT `attachment_ibfk_2` FOREIGN KEY (`...