大约有 34,900 项符合查询结果（耗时：0.0562秒） [XML]
How to list all users in a Linux group?
...
Unfortunately, there is no good, portable way to do this that I know of. If you attempt to parse /etc/group, as others are suggesting, you will miss users who have that group as their primary group and anyone who has been added to that group via a mechanism other than UNIX flat files (i....
Why are quaternions used for rotations?
...
Gimbal lock is one reason, although as you say it is only a problem with Euler angles and is easily solvable. Euler angles are still used when memory is a concern as you only need to store 3 numbers.
For quaternions versus a 3x3 rotat...
Static methods - How to call a method from another method?
...
class.method should work.
class SomeClass:
@classmethod
def some_class_method(cls):
pass
@staticmethod
def some_static_method():
pass
SomeClass.some_class_method()
SomeClass.some_static_method()
...
Don't Echo Out cURL
...ec 16 '09 at 22:54
Matt McCormickMatt McCormick
12.7k2020 gold badges6969 silver badges8080 bronze badges
...
Scala: write string to file in one statement
...
While this approach looks nice, it is neither exception-safe nor encoding-safe. If an exception happens in write(), close will never be called, and the file won't be closed. PrintWriter also uses the default system encoding, which is very bad for p...
How do I break a string over multiple lines?
In YAML, I have a string that's very long. I want to keep this within the 80-column (or so) view of my editor, so I'd like to break the string. What's the syntax for this?
...
PHP expects T_PAAMAYIM_NEKUDOTAYIM?
Does anyone have a T_PAAMAYIM_NEKUDOTAYIM ?
10 Answers
10
...
How do I set the time zone of MySQL?
...one:
SET GLOBAL time_zone = '+8:00';
SET GLOBAL time_zone = 'Europe/Helsinki';
SET @@global.time_zone = '+00:00';
(Using named timezones like 'Europe/Helsinki' means that you have to have a timezone table properly populated.)
Keep in mind that +02:00 is an offset. Europe/Berlin is a timezone (th...
Android: ProgressDialog.show() crashes with getApplicationContext
... the problem is then this was fixed in Android 1.6 (API version 4).
It looks like the object reference that getApplicationContext() is returning just points to null. I think you're having a problem similar to one I had in that some of the code in the onCreate() is being run before the window is act...
How do I get the current username in Windows PowerShell?
...
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Jan 18 '10 at 11:52
Thomas BrattThom...