大约有 23,000 项符合查询结果（耗时：0.0430秒） [XML]
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...
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...
Select arrow style change
...ght: 2rem;
}
If you need it to also work in IE update the svg arrow to base64 and add the following:
select::-ms-expand { display: none; }
background-image: url(data:image/svg+xml;base64,PHN2ZyBmaWxsPSdibGFjaycgaGVpZ2h0PScyNCcgdmlld0JveD0nMCAwIDI0IDI0JyB3aWR0aD0nMjQnIHhtbG5zPSdodHRwOi8vd3d3Lnc...
Number of processors/cores in command line
...s /proc/cpuinfo. nproc is there on my ubuntu VM, but not on my RedHat 5.5-based machine.
– Digital Trauma
Oct 27 '13 at 15:41
8
...
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 (`...
How to set Java environment path in Ubuntu
...
Already solved here stackoverflow.com/questions/24641536/…
– user1420482
Apr 16 '18 at 2:02
1
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When does a process get SIGABRT (signal 6)?
... an example for this.
Here when d is to be constructed, it first calls its base class A ctor,
and passes inside pointer to itself.
the A ctor calls pure virtual method before table was filled with valid pointer,
because d is not constructed yet.
#include<iostream>
using namespace std;
class ...
How to get a file or blob from an object URL?
...(2018): For situations where ES5 can safely be used, Joe has a simpler ES5-based answer below.
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HTML list-style-type dash
...
Use this:
ul
{
list-style: square inside url('data:image/gif;base64,R0lGODlhBQAKAIABAAAAAP///yH5BAEAAAEALAAAAAAFAAoAAAIIjI+ZwKwPUQEAOw==');
}
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