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AMR/man/like.Rd
2018-05-22 16:34:22 +02:00

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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/misc.R
\name{like}
\alias{like}
\alias{\%like\%}
\title{Pattern Matching}
\source{
Inherited from the \href{https://github.com/Rdatatable/data.table/blob/master/R/like.R}{\code{like} function from the \code{data.table} package}, but made it case insensitive at default.
}
\usage{
x \%like\% pattern
}
\arguments{
\item{x}{a character vector where matches are sought, or an
object which can be coerced by \code{as.character} to a character
vector. \link{Long vectors} are supported.}
\item{pattern}{character string containing a \link{regular expression}
(or character string for \code{fixed = TRUE}) to be matched
in the given character vector. Coerced by
\code{\link{as.character}} to a character string if possible. If a
character vector of length 2 or more is supplied, the first element
is used with a warning. Missing values are allowed except for
\code{regexpr} and \code{gregexpr}.}
}
\value{
A \code{logical} vector
}
\description{
Convenience function to compare a vector with a pattern, like \code{\link[base]{grep}}. It always returns a \code{logical} vector and is always case-insensitive.
}
\examples{
library(dplyr)
# get unique occurences of bacteria whose name start with 'Ent'
septic_patients \%>\%
left_join_microorganisms() \%>\%
filter(fullname \%like\% '^Ent') \%>\%
pull(fullname) \%>\%
unique()
}