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How to extend an existing JavaScript array with another array, without creating a new array
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1553
The .push method can take multiple arguments. You can use the spread operator to pass all the el...
What is the best regular expression to check if a string is a valid URL?
... wrote my URL (actually IRI, internationalized) pattern to comply with RFC 3987 (http://www.faqs.org/rfcs/rfc3987.html). These are in PCRE syntax.
For absolute IRIs (internationalized):
/^[a-z](?:[-a-z0-9\+\.])*:(?:\/\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\._~\x{A0}-\x{D7FF}\x{F900}-\x{FDCF}\x{FDF0}-\x...
iPhone Simulator location
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143
Simulator: ~/Library/Application Support/iPhone Simulator/
You can browse simulator files from ...
Getting parts of a URL (Regex)
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153
A single regex to parse and breakup a
full URL including query parameters
and anchors e.g...
How to make a flat list out of list of lists?
...e 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, [])'
1000 loops, best of 3: 969 usec per loo...
How to compare two floating point numbers in Bash?
...s in scientific format, provided a capital letter E is employed, e.g. num1=3.44E6
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Why does substring slicing with index out of range work?
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Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
I'm now reading documentation on Twitter Bootstrap 3, and tried to follow column ordering as shown in this page but hit the wall. I don't understand why such a code works nor how to correctly specify the setting. What I want to show is one grid, which is consisted of length 5, and the other leng...
With CSS, use “…” for overflowed block of multi-lines
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answered Jun 3 '11 at 5:22
Jim ThomasJim Thomas
1,6181111 silver badges77 bronze badges
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Transpose/Unzip Function (inverse of zip)?
... use the special * operator.
>>> zip(*[('a', 1), ('b', 2), ('c', 3), ('d', 4)])
[('a', 'b', 'c', 'd'), (1, 2, 3, 4)]
The way this works is by calling zip with the arguments:
zip(('a', 1), ('b', 2), ('c', 3), ('d', 4))
… except the arguments are passed to zip directly (after being co...