大约有 13,909 项符合查询结果（耗时：0.0247秒） [XML]
How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
I've been digging through some parts of the Linux kernel, and found calls like this:
10 Answers
...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...oo(1,2,3)
# 1
# 2
# 3
The **kwargs will give you all
keyword arguments except for those corresponding to a formal parameter as a dictionary.
def bar(**kwargs):
for a in kwargs:
print(a, kwargs[a])
bar(name='one', age=27)
# age 27
# name one
Both idioms can be mixed with normal a...
How do I invert BooleanToVisibilityConverter?
...://msdn.microsoft.com/en-us/library/system.windows.data.ivalueconverter.aspx
In your Convert method, have it return the values you'd like instead of the defaults.
share
|
improve this answer
...
What is the difference between dict.items() and dict.iteritems() in Python2?
...al list of tuples and returned that. That could potentially take a lot of extra memory.
Then, generators were introduced to the language in general, and that method was reimplemented as an iterator-generator method named iteritems(). The original remains for backwards compatibility.
One of Pytho...
URLEncoder not able to translate space character
I am expecting
14 Answers
14
...
Reference list item by index within Django template?
...ng is that I can't say {{ data.foo }}, where foo is a variable with an index value in it and not a property name.
– Mike DeSimone
Jan 10 '11 at 23:06
1
...
What do (lambda) function closures capture?
...s been answered, but as for your first:
what does the closure capture exactly?
Scoping in Python is dynamic and lexical. A closure will always remember the name and scope of the variable, not the object it's pointing to. Since all the functions in your example are created in the same scope and...
Function pointers, Closures, and Lambda
... lessThan;
};
I used an anonymous delegate there as a closure (it's syntax is a little clearer and closer to C than the lambda equivalent), which captured lessThan (a stack variable) into the closure. When the closure is evaluated, lessThan (whose stack frame may have been destroyed) will continue...
Detect IF hovering over element with jQuery
...ver.
var isHovered = $('#elem').is(":hover"); // returns true or false
Example: http://jsfiddle.net/Meligy/2kyaJ/3/
(This only works when the selector matches ONE element max. See Edit 3 for more)
.
Edit 1 (June 29, 2013): (Applicable to jQuery 1.9.x only, as it works with 1.10+, see next Edit...
“TypeError: (Integer) is not JSON serializable” when serializing JSON in Python?
...
x.astype(int) or int(x)
– zelcon
May 14 '18 at 9:58
|
show 6 more...