searchable (version 0.3.3.1)

Pattern-class: Defines or extract a search pattern

Description

Patterns defines how searches are conducted against a searchable target

Usage

pattern(object, type, ...)
## S3 method for class 'default':
pattern(object = NULL, type = "std", ...)
## S3 method for class 'character':
pattern(object, type = "std", ...)
## S3 method for class 'Pattern':
pattern(object, type = object@type, ...)
## S3 method for class 'Searchable':
pattern(object, type = object@type, ...)
## S3 method for class 'Pattern':
show(object)

Arguments

object

character or pattern;

type

character; the type of match: std (default), regex, coll, fixed.

...

additional arguments to be passed to stri_opts_* functions. See details.

The pattern class defines how the search is conducted.

The function pattern is the constructor for the class. It takes a 'st

std

The default is std matching which performs matching as base R would. This is equivalent to fixed and case_insensitive = FALSE. Though the internal matching is sed.

regex

regex matching takes a regular expression for matching using

stri_*_regex functions.

coll

...

fixed

...

Examples

pattern('hello')
  pattern('hello', type="regex", boundary="starts_with" )