大约有 42,000 项符合查询结果（耗时：0.0411秒） [XML]
Casting vs using the 'as' keyword in the CLR
...re now, not having thought of using a nullable type and as together :)
EDIT: Note that none of the above talks about performance, other than the value type case, where I've noted that unboxing to a nullable value type is actually slower - but consistent.
As per naasking's answer, is-and-cast or...
String concatenation: concat() vs “+” operator
... follow
|
edited Oct 12 '17 at 12:57
answered Sep 6 '08 at 16:25
...
How to convert DateTime? to DateTime
... follow
|
edited Jun 19 '18 at 12:45
answered Sep 6 '16 at 14:02
...
How to get a reference to current module's attributes in Python
... follow
|
edited Jul 13 at 11:11
answered Nov 2 '19 at 20:38
...
What's the difference between globals(), locals(), and vars()?
... follow
|
edited Dec 10 '19 at 9:50
user2357112 supports Monica
200k2020 gold badges287287 silver badges373373 bronze badges
...
Max length UITextField
... follow
|
edited May 7 '19 at 23:24
answered Aug 10 '14 at 0:13
...
How to automatically generate N “distinct” colors?
... follow
|
edited Jan 22 '09 at 22:01
answered Jan 22 '09 at 20:50
...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1
...Apr 20 2012, 22:39:59)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> s = '(\xef\xbd\xa1\xef\xbd\xa5\xcf\x89\xef\xbd\xa5\xef\xbd\xa1)\xef\xbe\x89'
>>> s1 = s.decode('utf-8')
>>> print s1
(｡･ω･｡)ﾉ
>>>
...
How to find memory leak in a C++ code/project?
... follow
|
edited May 22 at 3:44
NAND
63755 silver badges2121 bronze badges
answered Dec ...
python design patterns [closed]
... follow
|
edited Dec 28 '18 at 23:32
community wiki
...