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Difference between dispatch_async and dispatch_sync on serial queue?
.... And a task can only be executed after it is dispatched.
The execution time of the tasks doesn't change anything. This code always print 12
dispatch_async(_serialQueue, ^{ sleep(1000);printf("1"); });
dispatch_async(_serialQueue, ^{ printf("2"); });
What may happened is
Thread 1: dispatch_...
The source was not found, but some or all event logs could not be searched
... for handling such issues is to register event log sources at installation time (under an administrator account), then assume that they exist at runtime, allowing any resulting exception to be treated as unexpected if a target event log source does not actually exist at runtime.
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plot a circle with pyplot
surprisingly I didn't find a straight-forward description on how to draw a circle with matplotlib.pyplot (please no pylab) taking as input center (x,y) and radius r. I tried some variants of this:
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Get the last item in an array
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@mvmn i did a benchmark a long time ago, throughput was around one or two million calls per second on a single 2.4ghz thread. so unless you have solve problems you shouldn't solve in JS anyways, it won't be noticable (iirc slowdown compared to arr[arr.leng...
What is array to pointer decay?
...be assigned to the parameter.
1 The constant U should be known at compile-time.
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How to merge two arrays in JavaScript and de-duplicate items
I have two JavaScript arrays:
76 Answers
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Is there an interactive way to learn Vim? [closed]
... @nyuszika7h I agree. I would 100% buy this if it wasn't for the time limit. I need something I can use to refresh my memory 5 years from now.
– Dan Bechard
May 29 '16 at 23:59
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Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close
...nal desktop application, make sure it delivers what you need.
Pivot. First time I heard about it. It's basically a new UI framework based on Java2D. So I gave it a try yesterday. No Swing, just tiny bit of AWT (new Font(...)).
My first impression was a nice one. There is an extensive documentation ...
How does a ArrayList's contains() method evaluate objects?
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Generally you should also override hashCode() each time you override equals(), even if just for the performance boost. HashCode() decides which 'bucket' your object gets sorted into when doing a comparison, so any two objects which equal() evaluates to true should return the ...
Get changes from master into branch in Git
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Sometimes, git merge would be better. If both branches evolved over time, you should consider which is best for you.
– erick2red
May 25 '15 at 15:48
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