大约有 40,100 项符合查询结果（耗时：0.0399秒） [XML]
while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?
...True is reassignable:
Python 2.7 (r27:82508, Jul 3 2010, 21:12:11)
[GCC 4.0.1 (Apple Inc. build 5493)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> True = 4
>>> True
4
In Python 3.x it truly becomes a keyword and a real constant:
Pyth...
Rounding DateTime objects
... |
edited Apr 8 '10 at 11:49
answered Sep 8 '09 at 12:27
tv...
How to get the class of the clicked element?
...|
edited Oct 11 '13 at 10:41
answered Jun 8 '09 at 10:07
Fe...
Is JSON Hijacking still an issue in modern browsers?
...tests initializing arrays and objects via the short and long forms.
The ES4 spec, in section 1.5, "requires the global, standard bindings of Object and Array to be used to construct new objects for object and array initializers" and notes in Implementation Precedent that "Internet Explorer 6, Opera...
Where are environment variables stored in registry?
...
4 Answers
4
Active
...
unsigned APK can not be installed
...ks for speaking :)
– Aleks
Mar 12 '14 at 19:57
add a comment
|
...
phpinfo() - is there an easy way for seeing it?
...
|
edited Jan 14 '19 at 15:18
answered Aug 25 '11 at 12:34
...
SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
...
Since 3.24.0 SQLite also supports upsert, so now you can simply write the following
INSERT INTO visits (ip, hits)
VALUES ('127.0.0.1', 1)
ON CONFLICT(ip) DO UPDATE SET hits = hits + 1;
...
How do I parse JSON with Objective-C?
... a suitable error condition */
}
}
else
{
// the user is using iOS 4; we'll need to use a third-party solution.
// If you don't intend to support iOS 4 then get rid of this entire
// conditional and just jump straight to
// NSError *error = nil;
// [NSJSONSerialization JSONOb...