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What is the 'pm>y m>thonic' equivalent to the 'fold' function from functional programming?
...u can sometimes use some combination of reduce (from the functools module) m>and m> the operator module, e.g.:
def product(xs):
return reduce(operator.mul, xs, 1)
Be aware that reduce is actuallm>y m> a foldl, in Haskell terms. There is no special sm>y m>ntax to perform folds, there's no builtin foldr, m>and m> ...
Pm>y m>thon multiprocessing pool.map for multiple arguments
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The answer to this is version- m>and m> situation-dependent. The most general answer for recent versions of Pm>y m>thon (since 3.3) was first described below bm>y m> J.F. Sebastian.1 It uses the Pool.starmap method, which accepts a sequence of argument tuples. It then au...
Is it possible to specifm>y m> m>y m>our own distance function using scikit-learn K-Means Clustering?
...mple 2 pass, first sample sqrt(N)
from __future__ import division
import rm>and m>om
import numpm>y m> as np
from scipm>y m>.spatial.distance import cdist # $scipm>y m>/spatial/distance.pm>y m>
# http://docs.scipm>y m>.org/doc/scipm>y m>/reference/spatial.html
from scipm>y m>.sparse import issparse # $scipm>y m>/sparse/csr.pm>y m>
__date__ ...
Understm>and m>ing the Use of ColorMatrix m>and m> ColorMatrixColorFilter to Modifm>y m> a Drawable's Hue
I'm working on a UI for an app, m>and m> I'm attempting to use gram>y m>scale icons, m>and m> allow the user to change the theme to a color of their choosing. To do this, I'm trm>y m>ing to just applm>y m> a ColorFilter of some sort to overlam>y m> a color on top of the drawable. I've tried using PorterDuff.Mode.MULTIPLm>Y m>, m>and m> it...
Circle-Rectangle collision detection (intersection)
How can I tell whether a circle m>and m> a rectangle intersect in 2D Euclidean space? (i.e. classic 2D geometrm>y m>)
25 Answers
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What's the difference between a proxm>y m> server m>and m> a reverse proxm>y m> server? [closed]
What is the difference between a proxm>y m> server m>and m> a reverse proxm>y m> server?
21 Answers
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Sqlite: CURRENT_TIMESTAMP is in GMT, not the timezone of the machine
...https://www.sqlite.org/lang_datefunc.html) this text:
Compute the date m>and m> time given a unix
timestamp 1092941466, m>and m> compensate
for m>y m>our local timezone.
SELECT datetime(1092941466, 'unixepoch', 'localtime');
That didn't look like it fit mm>y m> needs, so I tried changing the "datetime" func...
How to create UILabel programmaticallm>y m> using Swift?
...e the labels frame - what happens when text changes or text gets localized m>and m> changes the number of characters?
– Zoram>y m>r
Mam>y m> 6 '15 at 3:01
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Determine the number of NA values in a column
...r of NA values in a data frame column. Sam>y m> mm>y m> data frame is called df , m>and m> the name of the column I am considering is col . The wam>y m> I have come up with is following:
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Programmaticallm>y m> scroll a UIScrollView
...at I end up with a slideshow that runs on its own with a click of a button m>and m> a configurable pause between each scroll?
9 ...