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  characters.  \code{\link{readChar}} and \code{\link{writeChar}} can
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  characters.  \code{\link{readChar}} and \code{\link{writeChar}} can
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  be used to read and write fixed-length strings.  No check is made that
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  be used to read and write fixed-length strings.  No check is made that
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  the string is valid in the current locale.
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  the string is valid in the current locale.
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  Handling \R's missing and special (\code{Inf}, \code{-Inf} and
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  Handling \R's missing and special (\code{Inf}, \code{-Inf} and
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  \code{NaN}) values is discussed in the \emph{R Data Import/Export} manual.
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  \code{NaN}) values is discussed in the \sQuote{R Data Import/Export} manual.
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  Only \eqn{2^{31}-1}{2^31 - 1} bytes can be written in a single
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  Only \eqn{2^{31}-1}{2^31 - 1} bytes can be written in a single
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  call (and that is the maximum capacity of a raw vector).
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  call (and that is the maximum capacity of a raw vector).
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}
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}
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  For \code{writeBin}, a raw vector (if \code{con} is a raw vector) or
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  For \code{writeBin}, a raw vector (if \code{con} is a raw vector) or
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  invisibly \code{NULL}.
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  invisibly \code{NULL}.
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}
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}
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\seealso{
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\seealso{
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  The \emph{R Data Import/Export} manual.
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  The \sQuote{R Data Import/Export} manual.
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  \code{readChar} to read/write fixed-length strings.
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  \code{readChar} to read/write fixed-length strings.
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  \code{\link{connections}}, \code{\link{readLines}},
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  \code{\link{connections}}, \code{\link{readLines}},
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  \code{\link{writeLines}}.
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  \code{\link{writeLines}}.