flodel

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flodel has asked 48 questions and find answers to 470 problems.

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flodel questions

unconditional warnings when recycling
conditional inclusion of arguments in a function call
automatically detect date columns when reading a file into a data.frame
why does `x[0]` return a zero-length vector?
Why does `a ^ b` return a numeric when both `a` and `b` are integers?
preserve old (pre 3.1.0) type.convert behavior
setting environment variables programmatically
`as.na` function
Why are some of the logical operators so slow?
"replace" function examples

flodel answers

R: Is there a simple and efficient way to get back the list of building block matrices of a block-diagonal matrix?
R grep whole words separated by special characters
R: scan vectors once instead of 4 times?
Recode values in one vector to maximize the number of pairs of the same number in another vector
Keep duplicate column names when subsetting in R
R Optimization Returning Incorrect Values
R: Efficiently calculate multiplication'sum
Optimal way of iterating through a list of lists to maximise unique outputs
Split an rle object
fill missing columns with NA while extracting from a data.frame