R: Switch location of matches to location of non-matches.

invert_match {stringr} | R Documentation

## Switch location of matches to location of non-matches.

### Description

Invert a matrix of match locations to match the opposite of what was previously matched.

### Usage

    invert_match(loc)

### Arguments

`loc` | matrix of match locations, as from `str_locate_all()`

### Value

numeric match giving locations of non-matches

### Examples

    numbers <- "1 and 2 and 4 and 456"
    num_loc <- str_locate_all(numbers, "[0-9]+")[[1]]
    str_sub(numbers, num_loc[, "start"], num_loc[, "end"])

    text_loc <- invert_match(num_loc)
    str_sub(numbers, text_loc[, "start"], text_loc[, "end"])

[Package stringr version 1.3.1 Index]