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Is file append atomic in UNIm>Xm>?

In general, what can we take for granted when we append to a file in UNIm>Xm> from multiple processes? Is it possible to lose data (one process overwriting the other's changes)? Is it possible for data to get mangled? (For em>xm>ample, each process is appending one line per append to a log file, is it po...
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What is the difference between const int*, const int * const, and int const *?

...ata segment of a program and shouldn't be changed. bar is a constant or fim>xm>ed pointer to a value that can be changed. This is like a reference without the em>xm>tra syntactic sugar. Because of this fact, usually you would use a reference where you would use a T* const pointer unless you need to allow N...
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How to add property to a class dynamically?

... I suppose I should em>xm>pand this answer, now that I'm older and wiser and know what's going on. Better late than never. You can add a property to a class dynamically. But that's the catch: you have to add it to the class. >>> class Fo...
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How to initialize all members of an array to the same value?

... @CetinSert: What do you mean it doesn't work? It does em>xm>actly what this answer says it should do. It doesn't do what the comment in your code says, but that comment is wrong. – Benjamin Lindley Apr 19 '13 at 3:58 ...
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Reset select2 value and show placeholder

How do I set the placeholder on value reset by select2. In my em>xm>ample If locations or grade select bom>xm>es are clicked and my select2 has a value than the value of select2 should reset and show the default placeholder. This script is resetting the value but won't show the placeholder ...
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Switch on ranges of integers in JavaScript [duplicate]

... Here is another way I figured it out: const m>xm> = this.dealer; switch (true) { case (m>xm> < 5): alert("less than five"); break; case (m>xm> < 9): alert("between 5 and 8"); break; case (m>xm> < 12): alert("between 9 and 11...
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How do you divide each element in a list by an int?

...omprehension: myList = [10,20,30,40,50,60,70,80,90] myInt = 10 newList = [m>xm> / myInt for m>xm> in myList] or, if you need to maintain the reference to the original list: myList[:] = [m>xm> / myInt for m>xm> in myList] share ...
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Why does my application spend 24% of its life doing a null check?

... The tree is massive By far the most em>xm>pensive thing a processor ever does is not em>xm>ecuting instructions, it is accessing memory. The em>xm>ecution core of a modern CPU is many times faster than the memory bus. A problem related to distance, the further an electrical...
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Split a python list into other “sublists” i.e smaller lists [duplicate]

... I'd say chunks = [data[m>xm>:m>xm>+100] for m>xm> in range(0, len(data), 100)] If you are using python 2.m>xm> instead of 3.m>xm>, you can be more memory-efficient by using m>xm>range(), changing the above code to: chunks = [data[m>xm>:m>xm>+100] for m>xm> in m>xm>range(0, len(data), ...
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How do I get the coordinates of a mouse click on a canvas element?

... way to add a click event handler to a canvas element that will return the m>xm> and y coordinates of the click (relative to the canvas element)? ...