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% File src/library/base/man/pushBack.Rd
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% File src/library/base/man/pushBack.Rd
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% Part of the R package, http://www.R-project.org
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% Part of the R package, http://www.R-project.org
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% Copyright 1995-2011 R Core Team
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% Copyright 1995-2012 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{pushBack}
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\name{pushBack}
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\alias{pushBack}
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\alias{pushBack}
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\alias{pushBackLength}
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\alias{pushBackLength}
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\alias{clearPushBack}
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\title{Push Text Back on to a Connection}
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\title{Push Text Back on to a Connection}
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\description{
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\description{
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  Functions to push back text lines onto a \link{connection}, and to enquire
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  Functions to push back text lines onto a \link{connection}, and to enquire
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  how many lines are currently pushed back.
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  how many lines are currently pushed back.
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}
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}
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\usage{
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\usage{
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pushBack(data, connection, newLine = TRUE)
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pushBack(data, connection, newLine = TRUE)
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pushBackLength(connection)
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pushBackLength(connection)
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clearPushBack(connection)
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}
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}
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\arguments{
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\arguments{
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  \item{data}{a character vector.}
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  \item{data}{a character vector.}
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  \item{connection}{A \link{connection}.}
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  \item{connection}{A \link{connection}.}
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  \item{newLine}{logical.  If true, a newline is appended to each string
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  \item{newLine}{logical.  If true, a newline is appended to each string
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  \code{\link{Encoding}}) are pushed back they are converted to the
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  \code{\link{Encoding}}) are pushed back they are converted to the
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  current encoding.  This may involve representing characters as
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  current encoding.  This may involve representing characters as
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  \samp{<U+xxxx>} if they cannot be converted.
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  \samp{<U+xxxx>} if they cannot be converted.
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}
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}
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\value{
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\value{
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  \code{pushBack} returns nothing.
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  \code{pushBack} and \code{clearPushBack()} return nothing, invisibly.
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  \code{pushBackLength} returns number of lines currently pushed back.
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  \code{pushBackLength} returns number of lines currently pushed back.
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}
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}
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\seealso{\code{\link{connections}}, \code{\link{readLines}}.}
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\seealso{\code{\link{connections}}, \code{\link{readLines}}.}
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