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Check if object is file-like in Python
...ave like a real file, e.g. have a read() and a write method(), but have a different implementation. It is and realization of the Duck Typing concept.
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Get last result in interactive Python shell
...
Additionally, it doesn't work if the variable _ has been previously assigned. It's not uncommon, as this symbol is also used for throwaway variables (see stackoverflow.com/questions/5893163/…)
– user6015398
Jul 5 '...
Reimport a module in python while interactive
... object, so it must have been successfully imported before. This is useful if you have edited the module source file using an external editor and want to try out the new version without leaving the Python interpreter.
If running Python 3.4 and up, do import importlib, then do importlib.reload(name...
Run git pull over all subdirectories [duplicate]
... alias in my .gitconfig: all = "!f() { ls | xargs -I{} git -C {} $1; }; f" Now I can do git all pull, git all "checkout master" etc.
– borisdiakur
Jul 13 '15 at 8:39
5
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Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ords，DoubleClick。
以判断页面地址为例：
完全匹配：
if (location.pathname == “/en/list.aspx”) { … }
以某个地址开始的情况，如：/en/ 或 /jp/目录：
if (location.pathname.indexOf(“/en/”) == 0 || location.pathname.indexOf(“/jp/”) == 0) { … }
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How to add a new method to a php object on the fly?
...his:
class Foo
{
public function __call($method, $args)
{
if (isset($this->$method)) {
$func = $this->$method;
return call_user_func_array($func, $args);
}
}
}
$foo = new Foo();
$foo->bar = function () { echo "Hello, this function is add...
Javascript replace with reference to matched group?
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replacementValue can be a function and it is passed different arguments based on the catch groups? Amazing!
– daveloyall
Jun 13 '14 at 20:36
5
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Control cannot fall through from one case label
...heck were the C# devs thinking?! It works in every programming language I know, but not in C#.
– Black
Oct 27 '17 at 7:05
8
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Scala: List[Future] to Future[List] disregarding failed futures
...te: You can use Option or Either as well here, but Try is the cleanest way if you specifically want to trap exceptions
def futureToFutureTry[T](f: Future[T]): Future[Try[T]] =
f.map(Success(_)).recover { case x => Failure(x)}
val listOfFutures = ...
val listOfFutureTrys = listOfFutures.map(fu...
Set breakpoint in C or C++ code programmatically for gdb on Linux
...INT);
UPDATE: MSDN states that Windows doesn't really support SIGINT, so if portability is a concern, you're probably better off using SIGABRT.
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