optional ~master (2021-10-31T03:15:21.3959971)

Optional.opAssign

optional optional Optional

Assigns a value to the optional or sets it to none.

If T is of class type, interface type, or some function pointer than passing in null sets the optional to none internally

  1. auto ref opAssign(None )
  2. auto ref opAssign(U lhs)
  3. auto ref opAssign(Optional!U lhs)
    struct Optional(T)
    ref
    auto ref
    opAssign
    (
    U : T
    )
    (
    auto ref Optional!U lhs
    )
    if (
    isMutable!T &&
    isAssignable!(T, U)
    )

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