Aspects


vs


Grepl

Grepl is an R function that searches for matches to argument pattern within each element of a character vector.

Substr

A function/method that returns part of a string

Others

Quality Example
Operation slightly better

"Finally i also made a benchmark test which shows that substr operation is slightly better than sapply grepl and significantly better than vectorised grepl alone"

from question "How to avoid the loops in a specific multiple conditional statement in R"

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