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How to decorate a class?
...ython 2.7, (and @wraps, which maintains the original function's docstring, etc.):
def dec(klass):
old_foo = klass.foo
@wraps(klass.foo)
def decorated_foo(self, *args ,**kwargs):
print('@decorator pre %s' % msg)
old_foo(self, *args, **kwargs)
print('@decorator pos...
Why can I create a class named “var”?
... team did this. Same for other later introduced "keywords" like from, join etc (all contextual by the way).
– Abel
May 15 '12 at 17:38
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sho...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...ementsByClassName("class1 class2")
Using getElement* on a static element fetched with querySelector* will result in an element that is live with respect to the static subset of the DOM copied by querySelector, but not live with respect to the full document DOM... this is where the simple live/stati...
Android应用内存泄露分析、改善经验总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...→Merge Shortest Paths to GC Roots→exclude all phantom/weak/soft etc.references。
验证改善效果
  根据个人经验，我一般是这样验证改善效果的，运行程序，各个功能跑一遍，确保没有改出问题，完全退出程序，手动触发GC，然...
How to initialize a private static const map in C++?
...
map<int,int> create_map() {
map<int, int> m;
m[1] = 2; // etc.
return m;
}
}
map<int, int> const A::m = create_map();
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Difference between jQuery’s .hide() and setting CSS to display: none
...viously takes more time to run as it checks for callback functions, speed, etc...
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JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
...,
canvas = document.createElement('canvas'),
ctx = canvas.getContext("2d");
// set proper canvas dimensions before transform & export
if (4 < srcOrientation && srcOrientation < 9) {
canvas.width = height;
canvas.height = width;
} else {
...
How to pipe stdout while keeping it on screen ? (and not to a output file)
...dev/tty".
Using "wc" for "foo", the above examples work OK (on linux, OSX, etc.) as:
% echo 'Hi' | tee /dev/tty | wc
Hi
1 1 3
To add a count at the bottom of a list of matching files, I use something like:
% ls [A-J]* | tee /dev/tty | wc -l
To avoid having to remember all...
How to convert JSON to CSV format and store in a variable
...eal. e.g. each record on its own line, numbers and booleans left unquoted, etc.
– scunliffe
Aug 12 '15 at 12:32
2
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int a[] = {1,2,}; Weird comma allowed. Any particular reason?
...hind all decisions in the language. Type inference, removal of semi-colons etc have huge implications for the language. You're setting up a false dichotomy here, IMO.
– Jon Skeet
Aug 13 '11 at 5:59
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