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How to export and import environment variables in windows?
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Vivek
8,4961313 gold badges7070 silver badges9999 bronze badges
answered Feb 18 '09 at 4:26
jdigitaljdigital
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How do I determine k when using k-means clustering?
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142
You can maximize the Bayesian Information Criterion (BIC):
BIC(C | X) = L(X | C) - (p / 2) * l...
How does functools partial do what it does?
... return func(*args)
return wrapper
So, by calling partial(sum2, 4) you create a new function (a callable, to be precise) that behaves like sum2, but has one positional argument less. That missing argument is always substituted by 4, so that partial(sum2, 4)(2) == sum2(4, 2)
As for why it...
How can I search Git branches for a file or directory?
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454
git log + git branch will find it for you:
% git log --all -- somefile
commit 55d2069a092e07...
Javascript array search and remove string?
...ust remove one?
– Ari
Oct 18 '19 at 4:58
1
@Ari I've updated the answer for removing only one ele...
What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
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340
In the old days, "/opt" was used by UNIX vendors like AT&T, Sun, DEC and 3rd-party vendors ...
How can I compare two lists in python and return matches
..., but by far the most obvious way to do it is:
>>> a = [1, 2, 3, 4, 5]
>>> b = [9, 8, 7, 6, 5]
>>> set(a) & set(b)
{5}
if order is significant you can do it with list comprehensions like this:
>>> [i for i, j in zip(a, b) if i == j]
[5]
(only works for e...
Facebook Architecture [closed]
...sing the latest 5.3 and I'm willing to bet there's still a lot that is PHP 4 compatible. Otherwise, they couldn't use HipHop. HipHop IS A GOOD IDEA and needs to grow and expand, but in it's current state it's not really useful for that many people who are building NEW PHP apps.
There's also PHP to ...
LINQ equivalent of foreach for IEnumerable
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huysentruitw
24.1k88 gold badges7171 silver badges114114 bronze badges
answered Oct 14 '08 at 10:00
Fredrik Kalseth...
How to check if a String is numeric in Java
...berUtils.isCreatable or StringUtils.isNumeric.
With Apache Commons Lang 3.4 and below: NumberUtils.isNumber or StringUtils.isNumeric.
You can also use StringUtils.isNumericSpace which returns true for empty strings and ignores internal spaces in the string. Another way is to use NumberUtils.isPar...