大约有 16,000 项符合查询结果（耗时：0.0382秒） [XML]
What's the difference between the atomic and nonatomic attributes?
... Given that any thread-safe code will be doing its own locking etc, when would you want to use atomic property accessors? I'm having trouble thinking of a good example.
– Daniel Dickison
May 24 '11 at 20:00
...
What is the difference between ELF files and bin files?
...oint to the handlers you have to roll all of that into your linker script, etc so that the loadable data is destined for the flash that the thing boots off of.
– old_timer
Jun 16 at 4:08
...
performSelector may cause a leak because its selector is unknown
...re calling. The result could be anything: void, int, char, NSString *, id, etc. ARC normally gets this information from the header of the object type you're working with.3
There are really only 4 things that ARC would consider for the return value:4
Ignore non-object types (void, int, etc)
Retain...
Scheduling recurring task in Android
...n is not currently running. For normal timing operations (ticks, timeouts, etc) it is easier and much more efficient to use Handler.
Timer
timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
synchronized public void run() {
\\ here your todo;
}
...
Good example of livelock?
... This time I have modified it to create deadlock, race condition, livelock etc.
So let's understand the problem statement first;
Cookie Maker Problem
There are some ingredient containers: ChocoPowederContainer, WheatPowderContainer. CookieMaker takes some amount of powder from ingredient containe...
What are best practices that you use when writing Objective-C and Cocoa? [closed]
...nter-caps (CamelCase) in method names, parameters, variables, class names, etc. rather than underbars (underscores).
Class names start with an upper-case letter, variable and method names with lower-case.
Whatever else you do, don't use Win16/Win32-style Hungarian notation. Even Microsoft gave up...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...various cluster validity metrics, I came across Dunn's Index, Elbow method etc. wasn't really sure which one to utilize so thought I will start off with the Elbow method.
– Legend
Jul 11 '11 at 17:24
...
How to implement custom JsonConverter in JSON.NET to deserialize a List of base class objects?
...ues (Culture, DateParseHandling, DateTimeZoneHandling, FloatParseHandling, etc...). These values should be copied over before using the new JsonReader in serializer.Populate().
– Alain
Feb 7 '14 at 15:57
...
Representing and solving a maze given an image
...invoke: python mazesolver.py <mazefile> <outputfile>[.jpg|.png|etc.]
base_img = Image.open(sys.argv[1])
base_pixels = base_img.load()
path = BFS(start, end, base_pixels)
path_img = Image.open(sys.argv[1])
path_pixels = path_img.load()
for position in path:
...
What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
... Further, let's assume that any Func passed in as a selector / mutator / etc. is a cheap O(1) operation.
5 Answers
...