grepvi: Variations on grep with different defaults, for convenience.

In stevetnz/stevesRfunctions: My Collection of Miscellaneous R Functions

Description

Three convenient variations on grep() with modified defaults. The suffix 'i' means ignore case and the suffix 'v' means return values.

Usage

grepvi(pattern, x, ...)

grepi(pattern, x, ...)

grepv(pattern, x, ...)

Arguments

pattern	character string containing a regular expression (see grep)
x	a character vector where matches are sought (see grep)
...	other grep() parameters; see Details.

Details

These functions also accept other grep parameters (apart from value= and ignore.case=), specifically: perl=, fixed=, useBytes= and invert=.

Functions

• grepvi: return values, ignoring case.

• grepi: the familiar grep but ignoring case.

• grepv: case-sensitive grep returning values.

See Also

%like%

Examples

grepvi('[aeiou]', c(letters,LETTERS))
grepi('[aeiou]', c(letters,LETTERS))
grepv('[aeiou]', c(letters,LETTERS))

stevetnz/stevesRfunctions documentation built on May 28, 2019, 8:21 a.m.