croma v0.11.1

Croma.Result.map_error

You're seeing just the function map_error, go back to Croma.Result module for more information.
Link to this function

map_error(result, f)

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Specs

map_error(t(a), (any() -> any())) :: t(a) when a: any()

Transforms a result by applying a function to its contained :error value. If the given result is in :ok state it is returned without using the given function.