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  \code{\link{gc}} and \code{\link{Memory}} for garbage collection and
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  \code{\link{gc}} and \code{\link{Memory}} for garbage collection and
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  memory management.
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  memory management.
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}
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}
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\examples{
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\examples{
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f <- function(e) print("cleaning....")
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f <- function(e) print("cleaning....")
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g <- function(x){ e <- environment(); reg.finalizer(e,f) }
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g <- function(x){ e <- environment(); reg.finalizer(e, f) }
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g()
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g()
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invisible(gc()) # trigger cleanup
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invisible(gc()) # trigger cleanup
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}
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}
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\keyword{programming}
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\keyword{programming}
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\keyword{environment}
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\keyword{environment}