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How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
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edited Apr 15 '13 at 10:38
answered Apr 14 '13 at 16:22
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For each row return the column name of the largest value
...ples using sample reproducible):
DF <- data.frame(V1=c(2,8,1),V2=c(7,3,5),V3=c(9,6,4))
colnames(DF)[apply(DF,1,which.max)]
[1] "V3" "V1" "V2"
A faster solution than using apply might be max.col:
colnames(DF)[max.col(DF,ties.method="first")]
#[1] "V3" "V1" "V2"
...where ties.method can be a...
What's the algorithm to calculate aspect ratio?
...he GCD for 44 and 99 is 11.
For example, a 1024x768 monitor has a GCD of 256. When you divide both values by that you get 4x3 or 4:3.
A (recursive) GCD algorithm:
function gcd (a,b):
if b == 0:
return a
return gcd (b, a mod b)
In C:
static int gcd (int a, int b) {
return (b...
How can you hide database output in Rails console?
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Soviut
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answered Jul 16 '13 at 11:53
Aaron B. Ru...
Measuring text width to be drawn on Canvas ( Android )
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answered Jul 15 '10 at 16:02
Marc BernsteinMarc Bernstein
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Replace all elements of Python NumPy Array that are greater than some value
...e to replace all values in it greater than or equal to a threshold T with 255.0. To my knowledge, the most fundamental way would be:
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Vim: How to change the highlight color for search hits and quickfix selection
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edited Oct 12 '15 at 21:45
Alois Mahdal
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What is a bank conflict? (Doing Cuda/OpenCL programming)
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5 Answers
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The $.param( ) inverse function in JavaScript / jQuery
...aram
– Felipe Castro
Jan 8 '13 at 0:52
2
Unfortunately the github page hasn't seen any updates in...
What is `git diff --patience` for?
...al diff.
– stivlo
Jun 23 '11 at 14:25
5
I've had much better luck with patience diff with XML; ce...