Expected.apply

If this is an expected value (of type T) apply fun on it and return result, otherwise return current unexpected value (of type E).

struct Expected(T, E = Exception)

@trusted => hasExpectedValue ? typeof(return)(unaryFun!fun(_expectedValue)) : typeof(return)(Unexpected!E(_unexpectedValue))

Expected!(typeof(unaryFun!fun(T.init)), E)

apply

(

alias fun

)

()

if (

!is(T == Unexpected!(_),

_

) &&

!is(T == void)

)

See Also

https://dlang.org/phobos/std_typecons.html#.apply

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