SumType.toHash

Undocumented in source. Be warned that the author may not have intended to support it.
struct SumType(TypeArgs...)
version(!D_BetterC)
const
static if(allSatisfy!(isHashable, staticMap!(ConstOf, Types)))
size_t
toHash
()
if (
is(NoDuplicates!TypeArgs == TypeArgs) &&
TypeArgs.length > 0
)

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