大约有 45,000 项符合查询结果（耗时：0.0806秒） [XML]
How to do version numbers? [closed]
...
259
[major].[minor].[release].[build]
major: Really a marketing decision. Are you ready to call t...
How can I catch all the exceptions that will be thrown through reading and writing a file?
...
|
edited Jul 2 '09 at 18:35
answered Jul 2 '09 at 18:20
...
Dictionary vs Object - which is more efficient and why?
...
o['i'] = i
o['l'] = []
all[i] = o
test_namedtuple.py (supported in 2.6):
import collections
Obj = collections.namedtuple('Obj', 'i l')
all = {}
for i in range(1000000):
all[i] = Obj(i, [])
Run benchmark (using CPython 2.5):
$ lshw | grep product | head -n 1
product: Intel(R) P...
Make copy of an array
I have an array a which is constantly being updated. Let's say a = [1,2,3,4,5] . I need to make an exact duplicate copy of a and call it b . If a were to change to [6,7,8,9,10] , b should still be [1,2,3,4,5] . What is the best way to do this? I tried a for loop like:
...
Android studio: new project vs new module
...
102
From the documentation (Android Studio is based on Intellij IDEA) :
Whatever you do in Intel...
Is it possible to modify variable in python that is in outer, but not global, scope?
... think this does what you want, but I'm not sure if you are running python 2 or 3.
The nonlocal statement causes the listed identifiers to refer to
previously bound variables in the nearest enclosing scope. This is
important because the default behavior for binding is to search the
local n...
How to get the focused element with jQuery?
...
752
// Get the focused element:
var $focused = $(':focus');
// No jQuery:
var focused = document.ac...
Is JavaScript a pass-by-reference or pass-by-value language?
...
32 Answers
32
Active
...
Using Java to find substring of a bigger string using Regular Expression
...
12 Answers
12
Active
...