On Saturday, 26 July 2014 at 09:48:55 UTC, Andrei Alexandrescu
wrote:
On 7/26/14, 2:19 AM, "Marc Schütz" <schue...@gmx.net>" wrote:
Yes, that's why it's possible to provide opEquals in addition
to opCmp.
Not quite, opCmp would then have to throw if opCmp(a,b) is
incomparable. Conflating incomparable and equal values as 0 is a
bad idea when sorting. That means incomparable values are
sprinkled randomly over the sort.
Case-insensitive ordering is a simple example.
That doesn't sound right. "<=" is defined for all possible pairs.
Case insensitive ordering satisfies the totality requirement: (a
<= b or b <= a), for all strings a and b?
