大约有 22,000 项符合查询结果（耗时：0.0415秒） [XML]
Do checkbox inputs only post data if they're checked?
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@beeglebug What you're describing is how PHP handles names and values, the [] suffix is not a part of the HTML specification and browsers do not treat it specially. Without the [] PHP will only allow access to a single value (the last value) instead of all values.
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
...y i) a;
count
10001
(1 row)
Time: 594,481 ms
http://www.pgsql.cz/index.php/PostgreSQL_SQL_Tricks_I
so be careful ... :)
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Inserting multiple rows in a single SQL query? [duplicate]
...red Jan 17 '09 at 6:10
too much phptoo much php
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What's the difference between a 302 and a 307 redirect?
...g the method to GET.
Example usage: if the browser sent POST to /register.php, then now load (GET) /success.html.
307: temporary redirect, repeating the request identically.
Example usage: if the browser sent a POST to /register.php, then this tells it to redo the POST at /signup.php.
308: permanen...
Why is string concatenation faster than array join?
...y overhead.
On the other hand ['abc', 'def'].join('') would usually just allocate memory to lay out the new string flat in memory. (Maybe this should be optimized)
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What are the true benefits of ExpandoObject?
...o our C# code, which we knows from dynamic languages as like JavaScript or PHP.
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UITableViewCell with UITextView height in iOS 7?
... andWidth: (CGFloat)width {
UITextView *calculationView = [[UITextView alloc] init];
[calculationView setAttributedText:text];
CGSize size = [calculationView sizeThatFits:CGSizeMake(width, FLT_MAX)];
return size.height;
}
This function will take a NSAttributedString and the desired ...
In STL maps, is it better to use map::insert than []?
...es") and are destroyed.
Which means extra time for:
1. One objects memory allocation
2. One extra constructor call
3. One extra destructor call
4. One objects memory deallocation
If your objects are large, constructors are typical, destructors do a lot of resource freeing, above points count even ...
Why is try {…} finally {…} good; try {…} catch{} bad?
...atement. If you are only using a 'try' in order to ensure resources are de-allocated in the 'finally' block, you might consider the 'using' statement instead:
using (StreamReader reader = new StreamReader('myfile.txt'))
{
// do stuff here
} // reader.dispose() is called automatically
You can ...
How to quit android application programmatically
...nishAffinity(); without System.exit(0); your application will quit but the allocated memory will still be in use by your phone, so... if you want a clean and really quit of an app, use both of them.
This is the simplest method and works anywhere, quit the app for real, you can have a lot of activit...