Subtract a string in R -

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i have string this:

phrase <- "this_is.//the_first?the_second"

and result want subtract string based on ? , take result this

>phrase_new[1]  "this_is.//the_first?" >phrase_new[2]   "the_second"

i try not working. please there idea this?

phrase_new <- sub("[:?:]", "", phrase)

if want split character, better use strsplit:

> strsplit(phrase, "?", fixed = true) [[1]] [1] "this_is.//the_first" "the_second"

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