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How to get item's position in a list?
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Simple regular expression for a decimal with a precision of 2
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Why does range(start, end) not include end?
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Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contains...
Regular expression to match any character being repeated more than 10 times
...le regular expression to match the same character being repeated more than 10 or so times. So for example, if I have a document littered with horizontal lines:
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How to use R's ellipsis feature when writing your own function?
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I read answers and comments and I see that few things weren't mentioned:
data.frame uses lis...
How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
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Assign multiple columns using := in data.table, by group
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This now works in v1.8.3 on R-Forge. Thanks for highlighting it!
x <- data.table(a = 1:3, ...
What does this square bracket and parenthesis bracket notation mean [first1,last1)?
I have seen number ranges represented as [first1,last1) and [first2,last2) .
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