Ref.this

Undocumented in source.
  1. this(T other)
  2. this(R other)
  3. this(R other)
    struct Ref(T)
    @nogc nothrow
    this
    (
    R
    )
    ()
    if (
    is(R : Ref!U,
    U
    ) &&
    extends!(T, U)
    )

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