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How to initialize an array's length in JavaScript?
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18 Answers
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Git Extensions: Win32 error 487: Couldn't reserve space for cygwin's heap, Win32 error 0
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14 Answers
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How do write IF ELSE statement in a MySQL query
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150
You probably want to use a CASE expression.
They look like this:
SELECT col1, col2, (case wh...
How to count the number of true elements in a NumPy bool array
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>>> import numpy as np
>>> boolarr = np.array([[0, 0, 1], [1, 0, 1], [1, 0, 1]], dtype=np.bool)
>>> boolarr
array([[False, False, True],
[ True, False, True],
[ True, False, True]], dtype=bool)
>>> np.sum(boolarr)
5
Of course, that is a bool...
A weighted version of random.choice
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312
Since version 1.7.0, NumPy has a choice function that supports probability distributions.
from...
Initialising an array of fixed size in python [duplicate]
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11 Answers
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Why does parseInt(1/0, 19) return 18?
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1294
The result of 1/0 is Infinity.
parseInt treats its first argument as a string which means fi...
What is Weak Head Normal Form?
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These expressions are all in normal form:
42
(2, "hello")
\x -> (x + 1)
These expressions are not in normal form:
1 + 2 -- we could evaluate this to 3
(\x -> x + 1) 2 -- we could apply the function
"he" ++ "llo" -- we could apply the (++)
(1 + 1, 2 + 2) ...
How to catch integer(0)?
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164
That is R's way of printing a zero length vector (an integer one), so you could test for a bei...
Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
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19 Answers
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