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queue up function callbacks


queue up function callbacks

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queue up function callbacks
Tag : javascript , By : vbanos
Date : November 25 2020, 01:01 AM


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jQuery.Callbacks - Removing anonymous function callbacks


Tag : javascript , By : Rohii
Date : March 29 2020, 07:55 AM
Does that help Per OP Request:
Functions are identified by pointer. You have no pointer to your anonymous function, so you have nothing to pass to remove() to tell it which function to remove. Simply passing a duplicate function doesn't do it, because the duplicate has a different pointer. You need to stick with assigning the function to a variable, then passing that variable to remove().

Synchronization callbacks - block vs GCD queue


Tag : objective-c , By : Derek
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , An asynchronous callback is one where your current thread keeps executing statements, and you detach the execution of code in a different thread to be ran later.
There are several technologies to accomplish this. On this example I'm calling the method cacheImage:, with parameter image (just an example) in 4 different asynchronous ways.
// 1. NSThread
[NSThread detachNewThreadSelector:@selector(cacheImage:) toTarget:self withObject:image];

// 2. performSelector...
[self performSelectorInBackground:@selector(cacheImage:) withObject:image];

// 3. NSOperationQueue
NSInvocationOperation *invOperation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(cacheImage:) object:image];
NSOperationQueue *opQueue = [[NSOperationQueue alloc] init];
[opQueue addOperation:invOperation];

// 4. GCD
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    [self cacheImage:image];
});
// block definition
typedef void (^hello_t)();

// method that uses a block as parameter
-(void) runBlock:(hello_t)hello {
    hello();
}

// asynchronous execution of a block
[NSThread detachNewThreadSelector:@selector(runBlock) toTarget:self withObject:^(){
    NSLog(@"hi");
}];

Event Queue Function Callbacks


Tag : javascript , By : Habikki
Date : March 29 2020, 07:55 AM
seems to work fine
Does this timer event wait for three seconds and then callback the function that was passed to the setTimeout method? Or does it just place a timer event on the queue, then go back to function a, invoke b again, and this would place another timer event in the queue.

Trying to pass function callbacks - callbacks don't execute correctly


Tag : angular , By : John Studdert
Date : March 29 2020, 07:55 AM
I hope this helps you . As it turns out, it was a problem with this. I misidentified the root cause.
Component A was calling a function on Service S with a callback this.componentACallback Service S correctly called the function componentACallback as needed componentACallback inside Component A in turn, was doing more processing by calling this.doSomeOtherComponentAFunction()

What queue do callbacks run on?


Tag : swift , By : Felix Almeida
Date : March 29 2020, 07:55 AM
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