Function Exit Code

Usage

on.exit(expression)

Arguments

expression an expression to be executed.

Description

on.exit records the expression given as its argument as needing to be executed when then current function exits (either naturally or as the result of an error). This is useful for resetting graphical parameters or performing other cleanup actions.

Examples

opar <- par(mai=c(1,1,1,1))
on.exit(par(opar))

opar <- par(mai=c(1,1,1,1))
on.exit(par(opar))

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