CODEWITHSUNDEEP
rregex
llewmills
llewmills

Reputation: 3568

Splitting a string on two zero-width assertions

I would like to isolate a number within a string by splitting it on two zero-width assertions. I can split on the first 

strsplit("nursereviewday36_arm_1", "(?<=[[:alpha:]])(?=[[:digit:]])", perl = T)

So that it returns

[[1]]
[1] "nursereviewday" "36_arm_1"

But I would like to split into three like so

[[1]]
[1] "nursereviewday" "36" "_arm_1"

This is in R but any regex that solves this will do

Upvotes: 0

Views: 45

Answers (1)

Josh Withee
Josh Withee

Reputation: 11356

Try this:

 (?<=[[:alpha:]])(?=[[:digit:]])|(?<=[[:digit:]])(?=_)

Upvotes: 2

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