大约有 40,000 项符合查询结果（耗时：0.0523秒） [XML]
Dispelling the UIImage imageNamed: FUD
...few dozen KBs when compressed, but consumes over half a MB decompressed - width * height * 4). By contrast +imageWithContentsOfFile: will decompress that image everytime the image data is needed. As you can imagine, if you only need the image data once, you've won nothing here, except to have a cach...
PHP foreach change original array values
... foreach should be controversial? It's not like it's a function call with hidden side effects or anything.
– UncaAlby
Mar 22 '17 at 20:43
1
...
What does jQuery.fn mean?
...y, the fn property is just an alias to the prototype property.
The jQuery identifier (or $) is just a constructor function, and all instances created with it, inherit from the constructor's prototype.
A simple constructor function:
function Test() {
this.a = 'a';
}
Test.prototype.b = 'b';
var ...
Multiprocessing vs Threading Python [duplicate]
...is usually straightforward
Takes advantage of multiple CPUs & cores
Avoids GIL limitations for cPython
Eliminates most needs for synchronization primitives unless if you use shared memory (instead, it's more of a communication model for IPC)
Child processes are interruptible/killable
Python mult...
Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5
...to take advantage of the new auto layout features of iOS 6 while still providing compability with older devices on earlier versions of iOS?
...
Edit the root commit in Git?
...
@Cupcake: Did you test the old version of the command? It should work fine. The amend is changing the commit message only so the old and new root commits introduce exactly the same changes so the old root commit is skipped automatically...
dismissModalViewControllerAnimated deprecated
...d in the 2012 WWDC Session 236 - The Evolution of View Controllers on iOS Video. Essentially, view controllers presented by this API are no longer always modal, and since they were adding a completion handler it was a good time to rename it.
In response to comment from Marc:
What's the best way...
C++11 std::threads vs posix threads
...every platform, even if C++11 seems available. For instance in native Android std::thread or Win64 it just does not work or has severe performance bottlenecks (as of 2012).
A good replacement is boost::thread - it is very similar to std::thread (actually it is from the same author) and works reliab...
Wait for all promises to resolve
...
The accepted answer is correct. I would like to provide an example to elaborate it a bit to those who aren't familiar with promise.
Example:
In my example, I need to replace the src attributes of img tags with different mirror urls if available before rendering the content.
...
Django - what is the difference between render(), render_to_response() and direct_to_template()?
...ntext and all its context_processors.
But direct_to_template should be avoided as function based generic views are deprecated. Either use render or an actual class, see https://docs.djangoproject.com/en/1.3/topics/generic-views-migration/
I'm happy I haven't typed RequestContext in a long, long ti...