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How to make a flat list out of list of lists?
...for item in sublist]
As evidence, you can use the timeit module in the standard library:
$ python -mtimeit -s'l=[[1,2,3],[4,5,6], [7], [8,9]]*99' '[item for sublist in l for item in sublist]'
10000 loops, best of 3: 143 usec per loop
$ python -mtimeit -s'l=[[1,2,3],[4,5,6], [7], [8,9]]*99' 'sum(l...
Browser detection in JavaScript? [duplicate]
How do I determine the exact browser and version using JavaScript?
26 Answers
26
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Class method differences in Python: bound, unbound and static
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In Python, there is a distinction between bound and unbound methods.
Basically, a call to a member function (like method_one), a bound function
a_test.method_one()
is translated to
Test.method_one(a_test)
i.e. a call to an unbound method. Because of that, a call to...
Primary key/foreign Key naming convention [closed]
... group we have a raging debate regarding the naming convention for Primary and Foreign Keys. There's basically two schools of thought in our group:
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Resize HTML5 canvas to fit window
...get rid of the scrollbars, add "overflow: hidden" to the style of the html and body elements. See thefutureoftheweb.com/blog/100-percent-height-interface
– Denis Washington
Mar 16 '12 at 7:45
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UIImagePickerController error: Snapshotting a view that has not been rendered results in an empty sn
I am getting this error only in iOS 7 and the application crashed.
In iOS 6, I never get any error, just once of memory warning when opening the camera.
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How do you test that a Python function throws an exception?
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I'm using Python 2.7.10, and the above doesn't work; context.exception does not give the message; it is a type.
– LateCoder
Feb 25 '16 at 16:55
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How to allow remote connection to mysql
I have installed MySQL Community Edition 5.5 on my local machine and I want to allow remote connections so that I can connect from external source.
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Is SQL or even TSQL Turing Complete?
...e programming languages, so that's kinda cheating).
In this set of slides Andrew Gierth proves that with CTE and Windowing SQL is Turing Complete, by constructing a cyclic tag system, which has been proved to be Turing Complete. The CTE feature is the important part however -- it allows you to crea...
Are lists thread-safe?
...t 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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