大约有 44,252 项符合查询结果（耗时：0.0417秒） [XML]
How to reset a form using jQuery with .reset() method
...on a reset button. However after my code is getting longer, I realize that it doesn't work anymore.
16 Answers
...
PyPy — How can it possibly beat CPython?
...w is this possible?
Manual memory management (which is what CPython does with its counting) can be slower than automatic management in some cases.
Limitations in the implementation of the CPython interpreter preclude certain optimisations that PyPy can do (eg. fine grained locks).
As Marcelo men...
What is href=“#” and why is it used?
On many websites I see links that have href="#" . What does it mean? What is it used for?
9 Answers
...
What is the difference between a definition and a declaration?
...
A declaration introduces an identifier and describes its type, be it a type, object, or function. A declaration is what the compiler needs to accept references to that identifier. These are declarations:
extern int bar;
extern int g(int, int);
double f(int, double); // extern...
Simulator or Emulator? What is the difference?
...ece of software that mimics existing hardware/software, what should I call it? A simulator or an emulator?
21 Answers
...
What does if __name__ == “__main__”: do?
...
Whenever the Python interpreter reads a source file, it does two things:
it sets a few special variables like __name__, and then
it executes all of the code found in the file.
Let's see how this works and how it relates to your question about the __name__ checks we always s...
Is it better to reuse a StringBuilder in a loop?
...uilder.
In a very long loop I'm manipulating a StringBuilder and passing it to another method like this:
14 Answers
...
In a PHP project, what patterns exist to store, access and organize helper objects? [closed]
...h suggested by Flavius. There are numerous reasons to avoid this approach. It violates good OOP principles. The google testing blog has some good articles on the Singleton and how to avoid it:
http://googletesting.blogspot.com/2008/08/by-miko-hevery-so-you-join-new-project.html
http://googletesting...
What is Lazy Loading?
...
It's called lazy loading because, like a lazy person, you are putting off doing something you don't want to. The opposite is Eager Loading, where you load something right away, long before you need it.
If you are curious wh...
Is null an Object?
...
If null were an Object, it would support the methods of java.lang.Object such as equals(). However, this is not the case - any method invocation on a null results in a NullPointerException.
And this is what the Java Language Specification has to sa...