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How to check if a specific key is present in a hash or not?
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edited Mar 8 '16 at 21:32
answered Dec 24 '10 at 22:09
s...
Why are these numbers not equal?
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General (language agnostic) reason
Since not all numbers can be represented exactly in IEEE f...
How do I show the changes which have been staged?
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edited Feb 28 '18 at 23:35
Robert Harvey
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How do I clone a subdirectory only of a Git repository?
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Saurabh P Bhandari
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answered Mar 1 '09 at 18:00
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Using Git, how could I search for a string across all branches?
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edited Oct 29 '19 at 9:36
Peter Mortensen
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Multiple “order by” in LINQ
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syloc
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How to create a sequence of integers in C#?
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answered Jan 3 '11 at 22:06
alexnalexn
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How to obtain Signing certificate fingerprint (SHA1) for OAuth 2.0 on Android?
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edited Jul 20 '13 at 12:08
answered Jul 8 '13 at 7:57
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Why the switch statement cannot be applied on strings?
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answered Mar 16 '09 at 12:30
JaredParJaredPar
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How to append rows to an R data frame
..., and then, at the end, create your data.frame.
Continuing with Julian's f3 (a preallocated data.frame) as the fastest option so far, defined as:
# pre-allocate space
f3 <- function(n){
df <- data.frame(x = numeric(n), y = character(n), stringsAsFactors = FALSE)
for(i in 1:n){
df$x[i...