mapError.mapError

The actual mapError function.

template mapError(alias op, Hook = Abort)

@safe

mapError

(

T

E

H

)

(

auto ref Expected!(T, E, H) self

)

if (

is(typeof(op(self.error)))

)

Parameters

self: Type: Expected!(T, E, H)
an Expected object

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expected mapError functions

mapError