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How do I set a Windows scheduled task to run in the background? [closed]
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edited Nov 14 '19 at 20:33
Will
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answered Jul 4 '11 at ...
Finding the average of a list
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On Python 3.4+ you can use statistics.mean()
l = [15, 18, 2, 36, 12, 78, 5, 6, 9]
import statistics
statistics.mean(l) # 20.11111111111111
On older versions of Python you can do
sum(l) / len(l)
On Python 2 you need to convert len...
Append values to a set in Python
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420
keep.update(yoursequenceofvalues)
e.g, keep.update(xrange(11)) for your specific example. O...
error: command 'gcc' failed with exit status 1 while installing eventlet
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374
Your install is failing because you don't have the python development headers installed. You can...
How do I make and use a Queue in Objective-C?
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edited Feb 1 '10 at 17:40
Quinn Taylor
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What does in XML mean?
... Clonkex
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answered May 6 '10 at 20:23
Sean VieiraSean Vieira
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Relative frequencies / proportions with dplyr
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mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vignette:
When you group by multiple variables, each summary peels off one level of the grouping. That makes it easy to prog...
Explicitly calling return in a function or not
...e.
# here without calling .Primitive('return')
> (function() {10;20;30;40})()
[1] 40
# here with .Primitive('return')
> (function() {10;20;30;40;return(40)})()
[1] 40
# here return terminates flow
> (function() {10;20;return();30;40})()
NULL
> (function() {10;20;return(25);30;40})()
[1]...
When to use Vanilla JavaScript vs. jQuery?
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answered Jan 10 '11 at 22:49
user113716user113716
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