[Issue 9089] Very restrictive Tuple constructor

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9089


Andrej Mitrovic <andrej.mitrovich at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrej.mitrovich at gmail.com


--- Comment #1 from Andrej Mitrovic <andrej.mitrovich at gmail.com> 2012-12-02 09:44:19 PST ---
We could change the ctor to:

this(U...)(U values) if (U.length == Types.length)
{
    foreach (i, Unused; Types)
    {
        static if (isNumeric!(Types[i]))
            static assert(isNumeric!(U[i]));

        field[i] = to!(Types[i])(values[i]);
    }
}

(there are 2 ctors but we can use the same approach)

The isNumeric check is necessary because "to" also converts strings to
integrals/floating point. I'm not sure if this would cover all the cases
though.

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