% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/which.first.R
\name{which.first}
\alias{which.first}
\alias{which.last}
\title{Find the index of first/last \code{TRUE} value in a logical vector.}
\usage{
which.first(x, use.names = TRUE)

which.last(x, use.names = TRUE)
}
\arguments{
\item{x}{[\code{logical}]\cr
Logical vector.}

\item{use.names}{[\code{logical(1)}]\cr
If \code{TRUE} and \code{x} is named, the result is also
named.}
}
\value{
[\code{integer(1)} | \code{integer(0)}].
  Returns the index of the first/last \code{TRUE} value in \code{x} or
  an empty integer vector if none is found.
}
\description{
Find the index of first/last \code{TRUE} value in a logical vector.
}
\examples{
 which.first(c(FALSE, TRUE))
 which.last(c(FALSE, FALSE))
}
