03-Nov-2013 13:07, Joseph Rushton Wakeling пишет:
Hello all,
There are various generic functions in Phobos that can benefit from
type-specific overloads. For example, in std.math and std.numeric,
functions that deal with integers may benefit from having specialized
implementations to work with BigInt.
Question: what's the appropriate location for these overloads? In the
same module as their type,
Yes, it's the only path that scales.
or in the same module as the function they're
overloading?
Hardly scales - by the end of day they shouldn't be all imported by
std.math. Plus it's BigInt business to do some dirty internal work to
speed up common algorithms.
What are the implications for correct inferring of what
function to use, or useful aliases (e.g. alias abs = std.math.abs)?
Technically as long as the types are different there is no hijacking
going on (w/o aliases). The moment you add an alias it's as if you
declare it in your module, so it would fail to match on BigInt because
of anti-hijacking.
//this should work though:
alias abs = std.math.abs;
alias abs = std.bigint.abs;
Thanks & best wishes,
-- Joe
--
Dmitry Olshansky
