大约有 45,000 项符合查询结果（耗时：0.0380秒） [XML]
When is del useful in python?
...instance, rather than deleting a variable, one could just assign None to it. And when deleting from a dictionary, a del method could be added.
...
Is the ternary operator faster than an “if” condition in Java [duplicate]
I am prone to " if-conditional syndrome " which means I tend to use if conditions all the time. I rarely ever use the ternary operator. For instance:
...
Open Source Alternatives to Reflector? [closed]
... Leppie, thanks. I'm accepting this as the answer, even though it was a tough choice between your answer and Jason Haley's.
– MagicAndi
Mar 13 '10 at 18:44
...
What does the clearfix class do in css? [duplicate]
I've seen div tags use a clearfix class when it's child divs use the float property. The clearfix class looks like this:
...
How can I implement an Access Control List in my Web MVC application?
...orator pattern, Basically, this means that you take your object, and place it inside another object, which will act like a protective shell. This would NOT require you to extend the original class. Here is an example:
class SecureContainer
{
protected $target = null;
protected $acl = null;...
How come a non-const reference cannot bind to a temporary object?
Why is it not allowed to get non-const reference to a temporary object,
which function getx() returns? Clearly, this is prohibited by C++ Standard
but I am interested in the purpose of such restriction, not a reference to the standard.
...
What is a coroutine?
...ereby flow control is cooperatively passed between two different routines without returning.
The 'yield' statement in Python is a good example. It creates a coroutine. When the 'yield ' is encountered the current state of the function is saved and control is returned to the calling function. The ca...
How to avoid explicit 'self' in Python?
... is there's never any confusion over what's a member and what's not, even without the full class definition visible. This leads to useful properties, such as: you can't add members which accidentally shadow non-members and thereby break code.
One extreme example: you can write a class without any ...
What is the shortest function for reading a cookie by name in JavaScript?
...on approach:
The regex approach is not only the fastest in most browsers, it yields the shortest function as well. Additionally it should be pointed out that according to the official spec (RFC 2109), the space after the semicolon which separates cookies in the document.cookie is optional and an ar...
Who is calling the Java Thread interrupt() method if I'm not?
...d several threads here on the subject, I've read the IBM article Dealing with InterruptedException and yet there's something I'm simply not grasping which I think can be broken down into two questions:
...