Does R have function startswith or endswith like python? -

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was looking predictors name starts substring, not find similar function.

i'm not sure when added base (at least 3.3.0), startswith (and endswith) this. 

> startswith("what", "wha") [1] true > startswith("what", "ha") [1] false

https://stat.ethz.ch/r-manual/r-devel/library/base/html/startswith.html


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