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Loading/Downloading image from URL on Swift
... url.lastPathComponent)
print("Download Finished")
DispatchQueue.main.async() { [weak self] in
self?.imageView.image = UIImage(data: data)
}
}
}
Usage:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view...
Java concurrency: Countdown latch vs Cyclic barrier
...th a Runnable that executes that portion and
counts down on the latch, and queue all the Runnables to an Executor.
When all sub-parts are complete, the coordinating thread will be able
to pass through await. (When threads must repeatedly count down in
this way, instead use a CyclicBarrier.)
In cont...
The difference between the Runnable and Callable interfaces in Java
...single thread executor, making this mechanism similar to a serial dispatch queue. So as long as the caller calls your Runnable wrapped methods the calling thread will execute really fast without blocking. As soon as it calls a Callable wrapped in Future method it will have to block till all the othe...
How do I build a graphical user interface in C++? [closed]
...ot is going in in your main class/main function, except:
check the event queue if there's any new events
if there is, dispatch those events to appropriate handlers
when you're done, yield control back to the operating system (usually with some kind of special "sleep" or "select" or "yield" functio...
What is “vectorization”?
...ered Dec 20 '18 at 17:05
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Is it possible to insert multiple rows at a time in an SQLite database?
...e tables within a single transaction, which I find myself doing often when batch loading a database.
– Jamerson
Oct 19 '15 at 0:38
...
How do I import .sql files into SQLite 3?
...
Alternatively, you can do this from a Windows commandline prompt/batch file:
sqlite3.exe DB.db ".read db.sql"
Where DB.db is the database file, and db.sql is the SQL file to run/import.
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C state-machine design [closed]
... 2
: :
#define EV_ANY -1
#define EV_KEYPRESS 5000
#define EV_MOUSEMOVE 5001
Then you define all the functions that are called by the transitions:
static int GotKey (void) { ... };
static int FsmError (void) { ... };
All these function are written to take no va...
How to make asynchronous HTTP requests in PHP
... cron job invoking a heartbeat script which polls an actual database event queue to do real asynchronous events.
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is there an easy way to get the http status code in the failure block from AFHTTPClient?
...uest, the operationStatusCode will be -1009.
If you cancel the operations queue the operationStatusCode will be -999.
You can check all other NSError codes and their descriptions in Apple's documentation
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