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Error.map_error

map_errorf

Documentation​

Transforms an error.

If self is a non-error value it is returned unchanged. However, if self is an error, the error is transformed using the provided function

Arguments​

  • f: The function used to transform the error.

Examples​

Transforming an error value.​

      import Standard.Examples

      example_map_error =
          map = Examples.map
          map.at 10 . map_error (_ -> "The element 10 was not found.")