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Filtering a list based on a list of booleans
...se]
>>> list(compress(list_a, fil))
[1, 4]
Timing comparisons(py3.x):
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> %timeit list(compress(list_a, fil))
100000 loops, best of 3: 2.58 us per loop
>>> %timeit [i for (i, v) in zip(list...
How to add item to the beginning of List?
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answered Dec 24 '08 at 0:37
Matt HamiltonMatt Hamilton
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How does Haskell printf work?
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131
The trick is to use type classes. In the case of printf, the key is the PrintfType type class. ...
Split list into multiple lists with fixed number of elements
...an iterator, but you can convert the result to a list,
scala> List(1,2,3,4,5,6,"seven").grouped(4).toList
res0: List[List[Any]] = List(List(1, 2, 3, 4), List(5, 6, seven))
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How can I use Bash syntax in Makefile targets?
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391
+500
From t...
Rebuild IntelliJ project indexes
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263
File -> Invalidate caches...
(Force rebuild of all caches and indices on next startup)
Restar...
What does this square bracket and parenthesis bracket notation mean [first1,last1)?
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234
A bracket means that end of the range is inclusive -- it includes the element listed. A parenth...
Rails: redirect_to with :error, but flash[:error] empty
I'm trying to do a redirect while setting the flash[:error] value. (Rails 3.0.10)
3 Answers
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