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crunch (version 1.14.4)

ContextManager: Context managers

Description

Context managers

Usage

ContextManager(enter = function() { }, exit = function() { }, error = NULL, as = NULL)

Arguments

enter
function to run before doing things
exit
function to run after doing things
error
optional function to run if an error is thrown
as
character optional way to specify a default name for assinging the return of the enter function.

Value

an S3 class "contextManager" object

See Also

with-context-manager