rx_seek: Positive lookaround functions

In RVerbalExpressions: Create Regular Expressions Easily

Description

This function facilitates matching by providing assurances for surrounding symbols/groups of symbols. It allows for building expressions that are dependent on context of occurrence.

Usage

rx_seek_prefix(.data = NULL, value)

rx_seek_suffix(.data = NULL, value)

Arguments

.data	Expression to append, typically pulled from the pipe %>%
value	Exact expression to match

Examples

# this will match anything between square brackets
rx() %>%
  rx_seek_prefix("[") %>%
  rx_anything("lazy") %>%
  rx_seek_suffix(']')

RVerbalExpressions documentation built on Nov. 6, 2019, 5:08 p.m.