R: Get the indices of the nth instance of a pattern.

str_locate_nth {filesstrings} | R Documentation

## Get the indices of the nth instance of a pattern.

### Description

See `strex::str_locate_nth()`.

### Usage

    str_locate_nth(string, pattern, n)

    locate_nth(string, pattern, n)

    str_locate_first(string, pattern)

    locate_first(string, pattern)

    str_locate_last(string, pattern)

    locate_last(string, pattern)

### Arguments

`string` | A character vector.
`pattern` | The pattern to look for. The default interpretation is a regular expression, as described in stringi::stringi-search-regex. To match a without regular expression (i.e. as a human would), use coll(). For details see `stringr::regex()`.
`n` | A vector of integerish values. Must be either length 1 or have length equal to the length of `string`. Negative indices count from the back: while `n = 1` and `n = 2` correspond to first and second, `n = -1` and `n = -2` correspond to last and second-last. `n = 0` will return `NA`.

[Package filesstrings version 3.1.0 Index]