On Fri, Aug 29, 2008 at 3:13 PM, Arno Schödl <aschoedl@think-cell.com> wrote:
I have seen your | operator. It is o.k. for unary things, like rng | filter( predicate ), but for binary things, it is a bit weird:
rngA | difference(rngB)
I find the alternatives clearer: rngA - rngB would be nice (but requires concept checking), or difference( rngA, rngB ).
What about Infix a-la FC++? (rngA ^difference^ rngB) I love the syntax, but maybe this is too much operator abuse.
But regardless of notation, doesn't this suffer from the same problem that these objects are temporaries?
I'm still missing something: where is the problem in: vector<int> vecnA; vector<int> vecnB; DoSomethingWithRangeThatStoresIterators( difference_range< int, int > diffrng( vecnA, vecnB ) ); This works, as long as the range doesn't escape from DSWRTSI, or a copy is made. [of course a make_difference_range would make the code much cleaner] -- gpd