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Appending the same string to a list of strings in Python
...ally need a list, but just need an iterator, a generator expression can be more efficient (although it does not likely matter on short lists):
(s + mystring for s in mylist)
These are very powerful, flexible, and concise. Every good python programmer should learn to wield them.
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What happens to C# Dictionary lookup if the key does not exist?
...ee no indication that that question states that at all. It says it's doing more work than ContainsKey, which is true, because it has to extract the value as well. It's not doing two lookups though.
– Jon Skeet
Dec 2 '12 at 17:56
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Should I use string.isEmpty() or “”.equals(string)?
...ernal length of an private array whereas equals(Object anObject) does much more (e.g. checking instanceof). Perfromance-wise, isEmpty() is generally faster.
– Turing85
Jul 21 '15 at 8:28
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AppStore - App status is ready for sale, but not in app store
...might take 24 hours before your App is available on AppStore.
If it takes more than days then contact Apple.
Refer below screenshot.
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Center Google Maps (V3) on browser resize (responsive)
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deciding among subprocess, multiprocessing, and thread in Python?
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multiprocessing is a great Swiss-army knife type of module. It is more general than threads, as you can even perform remote computations. This is therefore the module I would suggest you use.
The subprocess module would also allow you to launch multiple processes, but I found it to be les...
LINQPad [extension] methods [closed]
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FFmpeg: How to split video efficiently?
...g another -ss before the input file for the a 'fast seek' followed by the more accurate slow seek.
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How to split a sequence into two pieces by predicate?
...ing for. When the list is ordered by a related criterion, this makes a lot more sense.
– erich2k8
Apr 10 '13 at 3:56
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Is mathematics necessary for programming? [closed]
...sic mathematical knowledge from high school or fresh year college math, no more no less, and that almost all of programming tasks can be achieved without even need for advanced math. He argued, however, that algorithms are fundamental & must-have asset for programmers.
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