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Is there an equivalent for the Zip function in Clojure Core or Contrib?
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answered Apr 6 '10 at 21:13
Michał MarczykMichał Marczyk
79.3k1111 gold badges187187 silver badges206206 bronze badges
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How to find the length of a string in R
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See ?nchar. For example:
> nchar("foo")
[1] 3
> set.seed(10)
> strn <- paste(sample(LETTERS, 10), collapse = "")
> strn
[1] "NHKPBEFTLY"
> nchar(strn)
[1] 10
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How to format a number 0..9 to display with 2 digits (it's NOT a date)
I'd like to always show a number under 100 with 2 digits (example: 03, 05, 15...)
5 Answers
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Unique combination of all elements from two (or more) vectors
... GHI 2012-05-02
7 ABC 2012-05-03
8 DEF 2012-05-03
9 GHI 2012-05-03
10 ABC 2012-05-04
11 DEF 2012-05-04
12 GHI 2012-05-04
13 ABC 2012-05-05
14 DEF 2012-05-05
15 GHI 2012-05-05
If the resulting order isn't what you want, you can sort afterwards. If you name the arguments to expand.grid...
PostgreSQL array_agg order
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answered Sep 6 '11 at 10:18
UlfRUlfR
3,1832222 silver badges3232 bronze badges
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How to fix the uninitialized constant Rake::DSL problem on Heroku?
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answered Jun 10 '11 at 1:02
wuputahwuputah
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IE8 and JQuery's trim()
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answered Aug 9 '10 at 10:58
SarfrazSarfraz
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Are there any side effects of returning from inside a using() statement?
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answered Mar 3 '10 at 9:07
Jon SkeetJon Skeet
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Initializing a member array in constructor initializer
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edited Oct 30 '10 at 9:44
answered Oct 30 '10 at 9:33
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efficient circular buffer?
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>>> import collections
>>> d = collections.deque(maxlen=10)
>>> d
deque([], maxlen=10)
>>> for i in xrange(20):
... d.append(i)
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>>> d
deque([10, 11, 12, 13, 14, 15, 16, 17, 18, 19], maxlen=10)
There is a recipe in the docs for deque that is si...