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assertEquals vs. assertEqual in python
...ssertion methods
assertEqual = assertEquals = failUnlessEqual
In Python 3, to your point, failUnlessEqual is explicitly deprecated. assertEquals carries this comment :-)
# Synonyms for assertion methods
# The plurals are undocumented. Keep them that way to discourage use.
# Do not ...
Can you do greater than comparison on a date in a Rails 3 search?
I have this search in Rails 3:
4 Answers
4
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why unaligned apk is needed?
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edited May 29 '15 at 19:36
Beau Grantham
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answe...
Difference between doseq and for in Clojure
...seq is for executing side-effects and returns nil.
user=> (for [x [1 2 3]] (+ x 5))
(6 7 8)
user=> (doseq [x [1 2 3]] (+ x 5))
nil
user=> (doseq [x [1 2 3]] (println x))
1
2
3
nil
If you want to build a new sequence based on other sequences, use for. If you want to do side-effects (print...
How do you know when to use fold-left and when to use fold-right?
... you use a left fold. Example (haskell-style pseudocode)
foldl (-) [1, 2, 3] == (1 - 2) - 3 == 1 - 2 - 3 // - is left-associative
If your operator is right-associative (right fold), the parentheses would be set like this:
A x (B x (C x D))
Example: Cons-Operator
foldr (:) [] [1, 2, 3] == 1 : ...
sed: print only matching group
...eplaced with the contents of the group
echo "foo bar <foo> bla 1 2 3.4" |
sed -n 's/.*\([0-9][0-9]*[\ \t][0-9.]*[ \t]*$\)/\1/p'
2 3.4
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Convert DateTime to String PHP
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edited Dec 3 '12 at 19:07
answered May 13 '12 at 3:17
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Process all arguments except the first one (in a bash script)
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edited May 23 '17 at 10:31
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answered Jan 29 '12 at 22:32
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