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% File src/library/base/man/bindenv.Rd
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% File src/library/base/man/bindenv.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 1995-2016 R Core Team
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% Copyright 1995-2018 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{bindenv}
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\name{bindenv}
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\title{Binding and Environment Locking, Active Bindings}
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\title{Binding and Environment Locking, Active Bindings}
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\usage{
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\usage{
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  arguments, and assigning to \code{sym} calls \code{fun} with one
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  arguments, and assigning to \code{sym} calls \code{fun} with one
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  argument, the value to be assigned.  This allows the implementation of
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  argument, the value to be assigned.  This allows the implementation of
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  things like C variables linked to \R variables and variables linked to
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  things like C variables linked to \R variables and variables linked to
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  databases, and is used to implement \code{\link{setRefClass}}.  It may
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  databases, and is used to implement \code{\link{setRefClass}}.  It may
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  also be useful for making thread-safe versions of some system globals.
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  also be useful for making thread-safe versions of some system globals.
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  Currently active bindings are not preserved during package installation,
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  but they can be created in \code{\link{.onLoad}}.
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}
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}
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\value{
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\value{
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  The \code{bindingIsLocked} and \code{environmentIsLocked} return a
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  The \code{bindingIsLocked} and \code{environmentIsLocked} return a
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  length-one logical vector.  The remaining functions return
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  length-one logical vector.  The remaining functions return
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  \code{NULL}, invisibly.
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  \code{NULL}, invisibly.