% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/s3.R
\name{as_box}
\alias{as_box}
\alias{as_box_if}
\title{Convert object to a box}
\usage{
as_box(x, class = NULL)

as_box_if(.x, .p, .class = NULL, ...)
}
\arguments{
\item{x, .x}{An R object.}

\item{class, .class}{A box class. If the input is already a box of
that class, it is returned as is. If the input needs to be boxed,
\code{class} is passed to \code{\link[=new_box]{new_box()}}.}

\item{.p}{A predicate function.}

\item{...}{Arguments passed to \code{.p}.}
}
\description{
\itemize{
\item \code{as_box()} boxes its input only if it is not already a box. The
class is also checked if supplied.
\item \code{as_box_if()} boxes its input only if it not already a box, or if
the predicate \code{.p} returns \code{TRUE}.
}
}