大约有 44,488 项符合查询结果（耗时：0.0830秒） [XML]
Why doesn't Java allow to throw a checked exception from static initialization block?
Why doesn't Java allow to throw a checked exception from a static initialization block? What was the reason behind this design decision?
...
Will the Garbage Collector call IDisposable.Dispose for me?
The .NET IDisposable Pattern implies that if you write a finalizer, and implement IDisposable, that your finalizer needs to explicitly call Dispose.
This is logical, and is what I've always done in the rare situations where a finalizer is warranted.
...
Asp.net MVC ModelState.Clear
Can anyone give me a succinct definition of the role of ModelState in Asp.net MVC (or a link to one). In particular I need to know in what situations it is necessary or desirable to call ModelState.Clear() .
...
Sending a message to nil in Objective-C
...entation: I wonder what " sending a message to nil " means - let alone how it is actually useful. Taking an excerpt from the documentation:
...
Correct way to define C++ namespace methods in .cpp file
...o understand because you don't know which namespace MyClass belongs to and it's just illogical (class function not in the same namespace?)
Version 1 is right because it shows that in the namespace, you are defining the function.
Version 3 is right also because you used the :: scope resolution oper...
The necessity of hiding the salt for a hash
...the encrypted salts, and they probably have access to your code as well. With all that could they decrypt the encrypted salts? If so then the encryption is pretty much useless anyway. The salt really is there to make it so it isn't possible to form a rainbow table to crack your entire password da...
When should one use a spinlock instead of mutex?
...
The Theory
In theory, when a thread tries to lock a mutex and it does not succeed, because the mutex is already locked, it will go to sleep, immediately allowing another thread to run. It will continue to sleep until being woken up, which will be the case once the mutex is being unlocke...
How to install latest version of Node using Brew
...ave you run brew update first? If you don't do that, Homebrew can't update its formulas, and if it doesn't update its formulas it doesn't know how to install the latest versions of software.
share
|
...
HTML5 dragleave fired when hovering a child element
...
You just need to keep a reference counter, increment it when you get a dragenter, decrement when you get a dragleave. When the counter is at 0 - remove the class.
var counter = 0;
$('#drop').bind({
dragenter: function(ev) {
ev.preventDefault(); // needed for IE
...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
... vast wisdom of the PHP Manual:
Relying on the default value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of w...