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Regular expression to match any character being repeated more than 10 times
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edited Jun 22 '16 at 17:52
Wiktor Stribiżew
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How to solve PHP error 'Notice: Array to string conversion in…'
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112
When you have many HTML inputs named C[] what you get in the POST array on the other end is an a...
How can I autoformat/indent C code in vim?
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answered Mar 1 '10 at 12:52
Amir RachumAmir Rachum
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Common xlabel/ylabel for matplotlib subplots
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218
This looks like what you actually want. It applies the same approach of this answer to your sp...
Should I use a data.frame or a matrix?
...e the choice.
Also:
Matrices are more memory efficient:
m = matrix(1:4, 2, 2)
d = as.data.frame(m)
object.size(m)
# 216 bytes
object.size(d)
# 792 bytes
Matrices are a necessity if you plan to do any linear algebra-type of operations.
Data frames are more convenient if you frequently refer to ...
git: Show index diff in commit message as comment
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answered Jan 20 '11 at 17:09
Alan Haggai AlaviAlan Haggai Alavi
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The most efficient way to implement an integer based power function pow(int, int)
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edited Apr 4 '18 at 7:26
John Zwinck
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an...
What is the behavior of integer division?
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edited Jun 30 '18 at 17:32
cmaher
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answered Aug 3...
Add new row to dataframe, at specific row-index, not appended?
...ds the (often slow) rbind call:
existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4))
r <- 3
newrow <- seq(4)
insertRow <- function(existingDF, newrow, r) {
existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),]
existingDF[r,] <- newrow
existin...