A Custom Option Enum with Undefined
Optional is a alternative Option enum value with [Optional::Undef] value.
[Optional::Def] is defined, and not-null
[Optional::Null] is defined, but Null
[Optional::Undef] is undefined
A Custom Option Enum with Undefined
Optional is a alternative Option enum value with [Optional::Undef] value.
[Optional::Def] is defined, and not-null
[Optional::Null] is defined, but Null
[Optional::Undef] is undefined