r/man/infer_nanoarrow_ptype.Rd

% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/infer-ptype.R
\name{infer_nanoarrow_ptype}
\alias{infer_nanoarrow_ptype}
\title{Infer an R vector prototype}
\usage{
infer_nanoarrow_ptype(x)
}
\arguments{
\item{x}{A \link[=as_nanoarrow_schema]{nanoarrow_schema},
\link[=as_nanoarrow_array]{nanoarrow_array}, or
\link[=as_nanoarrow_array_stream]{nanoarrow_array_stream}.}
}
\value{
An R vector of zero size describing the target into which
the array should be materialized.
}
\description{
Resolves the default \code{to} value to use in \code{\link[=convert_array]{convert_array()}} and
\code{\link[=convert_array_stream]{convert_array_stream()}}. The default conversions are:
}
\details{
\itemize{
\item null to \code{\link[vctrs:unspecified]{vctrs::unspecified()}}
\item boolean to \code{\link[=logical]{logical()}}
\item int8, uint8, int16, uint16, and int13 to \code{\link[=integer]{integer()}}
\item uint32, int64, uint64, float, and double to \code{\link[=double]{double()}}
\item string and large string to \code{\link[=character]{character()}}
\item struct to \code{\link[=data.frame]{data.frame()}}
\item binary and large binary to \code{\link[blob:blob]{blob::blob()}}
\item list, large_list, and fixed_size_list to \code{\link[vctrs:list_of]{vctrs::list_of()}}
\item time32 and time64 to \code{\link[hms:hms]{hms::hms()}}
\item duration to \code{\link[=difftime]{difftime()}}
\item date32 to \code{\link[=as.Date]{as.Date()}}
\item timestamp to \code{\link[=as.POSIXct]{as.POSIXct()}}
}

Additional conversions are possible by specifying an explicit value for
\code{to}. For details of each conversion, see \code{\link[=convert_array]{convert_array()}}.
}
\examples{
infer_nanoarrow_ptype(as_nanoarrow_array(1:10))

}