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[changelog] Fix using sequence, not tuple (#13670)

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Nick Treleaven 2022-02-17 13:07:33 +00:00 • committed by GitHub
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changelog/allow_casting_from_typetuple_to_typetuple.dd
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@ -1,20 +1,20 @@
Casting between compatible tuples Casting between compatible sequences
Prior to this release, casting between built-in tuples of the same type was not allowed. Prior to this release, casting between built-in sequences of the same type was not allowed.
Starting with this release, casting between tuples of the same length is accepted provided that the underlying types of the casted tuple are implicitly convertible to the target tuple types. Starting with this release, casting between sequences of the same length is accepted provided that the underlying types of the casted sequence are implicitly convertible to the target sequence types.
--- ---
alias Tuple(T...) = T; alias Seq(T...) = T;
void foo() void foo()
{ {
Tuple!(int, int) tup; Seq!(int, int) seq;
auto foo = cast(long) tup; auto foo = cast(long) seq;
pragma(msg, typeof(foo)); // (int, int) pragma(msg, typeof(foo)); // (int, int)
auto bar = cast(Tuple!(long, int)) tup; // allowed auto bar = cast(Seq!(long, int)) seq; // allowed
pragma(msg, typeof(bar)); // (long, int) pragma(msg, typeof(bar)); // (long, int)
} }
--- ---