crunch: ContextManager – R documentation

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ContextManager

Context managers

Context managers

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

`enter`	function to run before taking actions
`exit`	function to run after taking actions
`error`	optional function to run if an error is thrown
`as`	character optional way to specify a default name for assigning the return of the enter function.

an S3 class "contextManager" object