R/xgrep.R

In Epi: Statistical Analysis in Epidemiology

Defines functions lgrep ngrep fgrep

Documented in fgrep lgrep ngrep

fgrep <- function( pattern, x, ... )        x [grep( pattern,        x , ... )]
ngrep <- function( pattern, x, ... )  names(x)[grep( pattern,  names(x), ... )]
lgrep <- function( pattern, x, ... ) levels(x)[grep( pattern, levels(x), ... )]

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