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% File src/library/base/man/rev.Rd
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% File src/library/base/man/rev.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2014 R Core Team
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% Copyright 1995-2025 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{rev}
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\name{rev}
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\alias{rev}
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\alias{rev}
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\alias{rev.default}
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\alias{rev.default}
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\description{
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\description{
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  \code{rev} provides a reversed version of its argument.  It is generic
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  \code{rev} provides a reversed version of its argument.  It is generic
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  function with a default method for vectors and one for
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  function with a default method for vectors and one for
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  \code{\link{dendrogram}}s.
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  \code{\link{dendrogram}}s.
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  Note that this is no longer needed (nor efficient) for obtaining
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  vectors sorted into descending order, since that is now rather more
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  To obtain a vector sorted in decreasing order efficiently, use
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  directly achievable by \code{\link{sort}(x, decreasing = TRUE)}.
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  \code{\link{sort}(x, decreasing = TRUE)}, not \code{rev(sort(x))}.
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}
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}
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\references{
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\references{
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  \bibshow{R:Becker+Chambers+Wilks:1988}
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  \bibshow{R:Becker+Chambers+Wilks:1988}
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}
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}
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\seealso{\code{\link{seq}}, \code{\link{sort}}.}
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\seealso{\code{\link{seq}}, \code{\link{sort}}.}