On Sun, Oct 31, 2010 at 8:43 PM, Neil Groves <neil@grovescomputing.com>wrote:
On Sat, Oct 30, 2010 at 6:28 PM, Robert Jones <robertgbjones@gmail.com
wrote:
On Sat, Oct 30, 2010 at 12:38 PM, Neil Groves <neil@grovescomputing.com
wrote:
I propose that a breaking change is made to the index range adaptor so
that
it returns a pair<original_reference_type, index_type>.
Hi Neil
Could you provide a use-case example, before and after.
Certainly. I should have thought to do this in the original email. Thank you for taking the time to help me acquire information.
Before:
BOOST_FOREACH( auto item, rng | index ) { // access to the index is not possible - doh :-( // The return type of the dereferenced element from an index range adaptor loses the index const element_type& elem = item; }
Hi Neil ...so in the 'BEFORE' case, how can this be written now, with your library as it stands (presumably not with BOOST_FOREACH)? Thx - Rob. ps. I must, rather sheepishly, admit to not having been able to use your library in real code - sorry! Having actively encouraged you write it, I personally am constrained to 1.39 and before - doesn't that just suck!