sortOn: sorts range of aggregates by member name(s)

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On Wednesday, 5 November 2014 at 00:32:32 UTC, Nordlöw wrote:
> Has there been any proposals to add a sort-wrapper, say sortBy,
>
> in cases such as
>
>     struct X { double x, y, z; }
>     auto r = new X[3];
>
> used as
>
>     r.sortBy!("x", "y")
>
> sorting r by value of "x" then "y".
>
> If not and anybody is interest I could write one and make PR in 
> std.algorithm.

I think you're looking for multiSort.

http://dlang.org/phobos/std_algorithm.html#.multiSort