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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/ask.R
\name{ask}
\alias{ask}
\title{Display a prompt and collect the user's response}
\usage{
ask(msg = "Press <RETURN> to continue: ", con = stdin())
}
\arguments{
\item{msg}{Character vector providing the message to be displayed}
\item{con}{Character connection to query, defaults to \code{stdin()}.}
}
\value{
A character scalar containing the input provided by the user.
}
\description{
Display a prompt and collect the user's response
}
\details{
The prompt message will be displayed, and then \code{readLines} is used to
collect a single input value (possibly empty), which is then returned.
In most situations using the default \code{con=stdin()} should work
properly. Under RStudio, it is necessary to specify
\code{con=file("stdin")} for proper operation.
}
\examples{
# use default prompt
ask()
silly <- function() {
age <- ask("How old aroe you? ")
age <- as.numeric(age)
cat("In 10 years you will be", age + 10, "years old!\n")
}
}
\seealso{
\code{\link{readLines}}, \code{\link{scan}}
}
\author{
Gregory R. Warnes \email{greg@warnes.net}
}
\keyword{IO}
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