大约有 47,000 项符合查询结果(耗时:0.0644秒) [XML]
When should I use @classmethod and when def method(self)?
...e_static = staticmethod(lambda x: x+1)
In [7]: Foo.some_static(1)
Out[7]: 2
In [8]: Foo().some_static(1)
Out[8]: 2
In [9]: class Bar(Foo): some_static = staticmethod(lambda x: x*2)
In [10]: Bar.some_static(1)
Out[10]: 2
In [11]: Bar().some_static(1)
Out[11]: 2
The main use I've found for it i...
Difference between HTML “overflow : auto” and “overflow : scroll”
...
Johan DavidssonJohan Davidsson
2,45222 gold badges1515 silver badges2626 bronze badges
...
Pry: show me the stack
...on <ActionController::ImplicitRender#send_action(method, *args)>
#2 [method] process_action <AbstractController::Base#process_action(method_name, *args)>
#3 [method] process_action <ActionController::Rendering#process_action(*arg1)>
<... clipped ...>
[2] pry(#<Pos...
Python 2.7: Print to File
...
If you want to use the print function in Python 2, you have to import from __future__:
from __future__ import print_function
But you can have the same effect without using the function, too:
print >>f1, 'This is a test'
...
Replace specific characters within strings
...
With a regular expression and the function gsub():
group <- c("12357e", "12575e", "197e18", "e18947")
group
[1] "12357e" "12575e" "197e18" "e18947"
gsub("e", "", group)
[1] "12357" "12575" "19718" "18947"
What gsub does here is to replace each occurrence of "e" with an empty string ""....
Android SDK on a 64-bit linux machine
...n a 64-bit linux machine. The available SDK downloads seem to be just for 32-bit versions of Linux.
15 Answers
...
Enable zooming/pinch on UIWebView
...
232
Make sure you checked "Scales page to fit"
...
How to delete object from array inside foreach loop?
...
234
foreach($array as $elementKey => $element) {
foreach($element as $valueKey => $value...
What is %2C in a URL?
I'm trying to understand the structure of a URL, and I'm seeing a lot of %2C . I'm guessing this is a result of some encoding. What does that stand for?
...