大约有 48,000 项符合查询结果（耗时：0.0755秒） [XML]
Python - Create a list with initial capacity
...i]= message
return result
Results. (evaluate each function 144 times and average the duration)
simple append 0.0102
pre-allocate 0.0098
Conclusion. It barely matters.
Premature optimization is the root of all evil.
...
Calling a function every 60 seconds
...nction, delay)
That fires the function passed in as first parameter over and over.
A better approach is, to use setTimeout along with a self-executing anonymous function:
(function(){
// do some stuff
setTimeout(arguments.callee, 60000);
})();
that guarantees, that the next call is not...
How do I make an Android EditView 'Done' button and hide the keyboard when clicked?
When the user clicks on the EditView , Android opens the keyboard so that user can write in the EditView .
17 Answers
...
Is it possible to set transparency in CSS3 box-shadow?
...ose rgba() would work here. After all, browser support for both box-shadow and rgba() is roughly the same.
/* 50% black box shadow */
box-shadow: 10px 10px 10px rgba(0, 0, 0, 0.5);
div {
width: 200px;
height: 50px;
line-height: 50px;
text-align: center;
color: white;
...
One-liner to recursively list directories in Ruby?
...
What about hidden files and directories?
– alediaferia
Aug 30 '12 at 10:20
6
...
Font from origin has been blocked from loading by Cross-Origin Resource Sharing policy
...r page in say Safari (which at present doesn't do CORS checking for fonts) and Firefox (that does) to double check this is the problem described.
See Stack overflow answer on Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading for the Amazon S3 CORS details.
NB in...
Eclipse: quick search on filename
...ackage this class is. Using Search is not very convenient. Too many clicks and key presses. I wonder, is there a plugin to simplify this process? For example, would be great if there was text-edit box in the top of package explorer which could filter showing packages and .java files depending of ent...
What's the use of session.flush() in Hibernate
...) I have class where I am saving object using code id = session.save(obj); and transaction is committed at very next line but obj is not getting saved to DB ,Why? 2) I saved obj using session.save(obj); with commit and while returning I used return obj.getprimaryID(); In this case obj is saved to DB...
How to remove array element in mongodb?
...mber: '+1786543589455' } } }
);
It will find document with the given _id and remove the phone +1786543589455 from its contact.phone array.
You can use $unset to unset the value in the array (set it to null), but not to remove it completely.
...
Android: Coloring part of a string using TextView.setText()?
... coloring a part of the text (or making it bold, italic, transparent, etc.)and not the rest. For example:
13 Answers
...