Kmisc (version 0.4.0-1)

fgrep: Fixed/Fast Grep

Description

This is equivalent to calling grep with fixed=TRUE.

Usage

fgrep(pattern, x, ignore.case = FALSE, value = FALSE,
    useBytes = FALSE, invert = FALSE)

Arguments

pattern

character string containing a character string to be matched in the given character vector; coerced by as.character if possible.

x

a character vector where matches are sought, or an object coercable by as.character.

ignore.case

boolean; if TRUE we perform case-insensitive matching.

value

boolean; if TRUE we return the actual matches; if FALSE we return the indices corresponding to the matches.

useBytes

boolean; if TRUE we perform matching byte-by-byte rather than character by character.

invert

boolean; if TRUE we return indices or values for elements that do not match.

See Also

grep

Examples

fgrep( "abc", c("abc", "babcd", "abcdef", "apple"), value=TRUE )