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How do I empty an array in JavaScript?
...0,A.length)
Using .splice() will work perfectly, but since the .splice() function will return an array with all the removed items, it will actually return a copy of the original array. Benchmarks suggest that this has no effect on performance whatsoever.
Method 4 (as suggested by tanguy_k)
while...
How do I read text from the (windows) clipboard from python?
...)
win32clipboard.EmptyClipboard()
win32clipboard.SetClipboardText('testing 123')
win32clipboard.CloseClipboard()
# get clipboard data
win32clipboard.OpenClipboard()
data = win32clipboard.GetClipboardData()
win32clipboard.CloseClipboard()
print data
An important reminder from the documentation:
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#pragma pack effect
...sistency of stored data between different compiler targets. I had a lot of fun with this transitioning from 16 bit to 32 bit code; I expect porting to 64 bit code will cause the same kinds of headaches for some code.
shar...
Can Python test the membership of multiple values in a list?
...peed boost is due to Python's fast c-backed implementation of set, but the fundamental algorithm is the same in both cases.
If your items are already stored in a list for other reasons, then you'll have to convert them to a set before using the subset test approach. Then the speedup drops to about ...
Split string every nth character?
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>>> line = '1234567890'
>>> n = 2
>>> [line[i:i+n] for i in range(0, len(line), n)]
['12', '34', '56', '78', '90']
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Best way to merge two maps and sum the values of same key?
...n you learn Applicative and it's the same thing. Next?" Next are even more functional concepts. And those greatly help you structure your code and solve problems nicely.
– AndreasScheinert
Aug 16 '11 at 12:00
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Putting HTML inside Html.ActionLink(), plus No Link Text?
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Craig StuntzCraig Stuntz
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What are the effects of exceptions on performance in Java?
...st too long to post here. So let me summarize here and refer you to http://www.fuwjax.com/how-slow-are-java-exceptions/ for the gritty details.
The real question here is not "How slow are 'failures reported as exceptions' compared to 'code that never fails'?" as the accepted response might have you...
Use dynamic variable names in JavaScript
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a = 'varname';
str = a+' = '+'123';
eval(str)
alert(varname);
Try this...
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Is using 'var' to declare variables optional? [duplicate]
... use var the variable is declared within the scope you are in (e.g. of the function). If you don't use var, the variable bubbles up through the layers of scope until it encounters a variable by the given name or the global object (window, if you are doing it in the browser), where it then attaches. ...