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(v1.6.0.9003) like() fix

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dr. M.S. (Matthijs) Berends
2021-04-16 11:41:05 +02:00
parent d277d58475
commit 00d3e437a8
29 changed files with 78 additions and 62 deletions
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8
man/like.Rd
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@@ -6,7 +6,7 @@
\alias{\%like_case\%}
\title{Vectorised Pattern Matching with Keyboard Shortcut}
\source{
Idea from the \href{https://github.com/Rdatatable/data.table/blob/ec1259af1bf13fc0c96a1d3f9e84d55d8106a9a4/R/like.R}{\code{like} function from the \code{data.table} package}
Idea from the \href{https://github.com/Rdatatable/data.table/blob/ec1259af1bf13fc0c96a1d3f9e84d55d8106a9a4/R/like.R}{\code{like} function from the \code{data.table} package}, although altered as explained in \emph{Details}.
}
\usage{
like(x, pattern, ignore.case = TRUE)
@@ -18,7 +18,7 @@ x \%like_case\% pattern
\arguments{
\item{x}{a character vector where matches are sought, or an object which can be coerced by \code{\link[=as.character]{as.character()}} to a character vector.}
\item{pattern}{a character string containing a regular expression (or \link{character} string for \code{fixed = TRUE}) to be matched in the given character vector. Coerced by \code{\link[=as.character]{as.character()}} to a character string if possible. If a \link{character} vector of length 2 or more is supplied, the first element is used with a warning.}
\item{pattern}{a character vector containing regular expressions (or a \link{character} string for \code{fixed = TRUE}) to be matched in the given character vector. Coerced by \code{\link[=as.character]{as.character()}} to a character string if possible.}
\item{ignore.case}{if \code{FALSE}, the pattern matching is \emph{case sensitive} and if \code{TRUE}, case is ignored during matching.}
}
@@ -29,11 +29,11 @@ A \link{logical} vector
Convenient wrapper around \code{\link[=grepl]{grepl()}} to match a pattern: \code{x \%like\% pattern}. It always returns a \code{\link{logical}} vector and is always case-insensitive (use \code{x \%like_case\% pattern} for case-sensitive matching). Also, \code{pattern} can be as long as \code{x} to compare items of each index in both vectors, or they both can have the same length to iterate over all cases.
}
\details{
The \verb{\%like\%} function:
This \verb{\%like\%} function:
\itemize{
\item Is case-insensitive (use \verb{\%like_case\%} for case-sensitive matching)
\item Supports multiple patterns
\item Checks if \code{pattern} is a regular expression and sets \code{fixed = TRUE} if not, to greatly improve speed
\item Checks if \code{pattern} is a valid regular expression and sets \code{fixed = TRUE} if not, to greatly improve speed (vectorised over \code{pattern})
\item Always uses compatibility with Perl unless \code{fixed = TRUE}, to greatly improve speed
}