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How to prune local tracking branches that do not exist on remote anymore
...ne origin I can remove the local branches that are not on the remote any more.
31 Answers
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Why are side-effects modeled as monads in Haskell?
..., concurrency, and nondeterminism. See my answer to this question for some more pointers.
– Conal
Aug 16 '11 at 0:23
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Rails 4: List of available datatypes
...our app with a not-PostgreSQL database.
Edit, 2016-Sep-19:
There's a lot more postgres specific datatypes in Rails 4 and even more in Rails 5.
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Why is lazy evaluation useful?
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Mostly because it can be more efficient -- values don't need to be computed if they're not going to be used. For example, I may pass three values into a function, but depending on the sequence of conditional expressions, only a subset may actually be...
Eclipse reports rendering library more recent than ADT plug-in
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Undo working copy modifications of one file in Git?
...HEAD^^^ for 3 commits back. You can also use HEAD~2, or HEAD~3, which gets more convenient if you want to go more commits back, while HEAD^2 means "the second parent of this commit"; because of merge commits, a commit can have more than one previous commit, so with HEAD^ a number selects which of th...
What is the Python equivalent of Matlab's tic and toc functions?
...f'):
# do some foo
# do some stuff
Sometimes I find this technique more convenient than timeit - it all depends on what you want to measure.
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How to print to stderr in Python?
...NOW, just to print some debugging info to the stderr... which I would find more of a hassle in most situations when I'm trying to debug something. (I'd rather not introduce new syntax errors!) :-)
– Dan H
Nov 20 '14 at 14:49
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What are “named tuples” in Python?
...((pt1[0]-pt2[0])**2 + (pt1[1]-pt2[1])**2)
Using a named tuple it becomes more readable:
from collections import namedtuple
Point = namedtuple('Point', 'x y')
pt1 = Point(1.0, 5.0)
pt2 = Point(2.5, 1.5)
from math import sqrt
line_length = sqrt((pt1.x-pt2.x)**2 + (pt1.y-pt2.y)**2)
However, named...
Boolean method naming readability
...xists(...)
Would be my prefered. As it makes your conditional checks far more like natural english:
if userExists ...
But I guess there is no hard and fast rule - just be consistent
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