ThomasIsCoding

ThomasIsCoding has asked 20 questions and find answers to 448 problems.

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ThomasIsCoding questions

construct block matrix consisting of different powers of basis matrices
(Speed Challenge) Any faster way to compute distance matrix in terms of generic Hamming distance?
Any more concise `data.table` way to unnest a nested column in data.table?
With dplyr, how to update two twisted columns in parallel, rather than an iterative manner?
Efficiently enumerate all possible matrices with given constraints
Simpler code to create a cell array of char type with the same prefix + sequential indices?
any efficient way to spread the list names to its inside vectors?
How to efficiently divide pairs into clusters such that each cluster contains all entries of a given set
Backtracking: List all possible matrices with row and column sum constraints
How to make a `functools.reduce` implementation that looks similarly as `Reduce` in R?

ThomasIsCoding answers

How to use a character variable to refer to a data.frame in R?
Alternate elements of a vector with multiple NAs
Count value coincidences into the same group
Fast way to split comma-separated strings into (sparse) boolean matrix in R
Contract a dataframe of an edge list by summing the contracted edge weights from/to two nodes
Faster ways of creating matrices in R
Converting Numbers from Base 10 to Base 60
How to check if values in first dataframe are contained or match values in another dataframe
Interpolate a one-dimensional vector to specified new size in R
R- Check if string contains only certain patterns