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Find running median from a stream of integers
...itrary elements while maintaining sorted order. When coupled with a FIFO queue that tracks the n-th oldest entry, the solution is simple:
class RunningMedian:
'Fast running median with O(lg n) updates where n is the window size'
def __init__(self, n, iterable):
self.it = iter(ite...
Executing Batch File in C#
I'm trying to execute a batch file in C#, but I'm not getting any luck doing it.
12 Answers
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CORS Access-Control-Allow-Headers wildcard being ignored?
I am having trouble getting a cross domain CORS request to work correctly using Chrome.
5 Answers
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How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
...ter(dispatch_time(DISPATCH_TIME_NOW, 10 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
NSLog(@"parameter1: %d parameter2: %f", parameter1, parameter2);
});
More: https://developer.apple.com/documentation/dispatch/1452876-dispatch_after
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Are lists thread-safe?
I notice that it is often suggested to use queues with multiple threads, instead of lists and .pop() . Is this because lists are not thread-safe, or for some other reason?
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Create folder with batch but only if it doesn't already exist
Can anybody tell me how to do the following in in a Windows batch script? ( *.bat ):
9 Answers
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How to use background thread in swift?
... 3.0. Running something on the background thread looks like this:
DispatchQueue.global(qos: .background).async {
print("This is run on the background queue")
DispatchQueue.main.async {
print("This is run on the main queue, after the previous code in outer block")
}
}
Swift 1....
Python: changing value in a tuple
...you want to do this?
But it's possible via:
t = ('275', '54000', '0.0', '5000.0', '0.0')
lst = list(t)
lst[0] = '300'
t = tuple(lst)
But if you're going to need to change things, you probably are better off keeping it as a list
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How to create a JavaScript callback for knowing when an image is loaded?
...It can't, because the browser will only fire the load event when the event queue is spun. That said, the load event listener must be in an else clause, as img.complete can become true before the load event is fired, hence if it weren't you could potentially have loaded called twice (note this is rel...
Which comment style should I use in batch files?
I've been writing some batch files, and I ran into this user guide , which has been quite informative. One thing it showed me was that lines can be commented not just with REM , but also with :: . It says:
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