[Issue 6154] std.math.abs on std.complex numbers too

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=6154


Don <clugdbug at yahoo.com.au> changed:

           What    |Removed                     |Added
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                 CC|                            |clugdbug at yahoo.com.au


--- Comment #3 from Don <clugdbug at yahoo.com.au> 2011-06-14 11:03:40 PDT ---
(In reply to comment #2)
> (In reply to comment #1)
> 
> >     auto m2 = map!`a.abs()`(array2);
> 
> Right. But std.math.abs has to work on complex numbers too, as before,

No, it does not, and will not.
BTW that approach would lead to executable bloat.

> for polymorphism, and for a serious integration of complex numbers in Phobos.

No. This is what overload sets are for.

Complex must not be given special treatment ahead of user-defined types.
Otherwise, user-defined types become second-class citizens.

(std.math.abs is a bit of a problem at the moment, there are a couple of
functions in std.math which have range versions, which IMHO have no business
being in there).

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