On Thu, 12 Aug 2010, Shin Fujishiro wrote: > David Simcha <[email protected]> wrote: > > I'm looking to go on a major debugging spree and make std.range work > > with const ranges. For example, the following should work: > > > > import std.range, std.algorithm; > > > > void main() { > > const foo = map!"a ^^ 2"([1,2,3,4,5]); > > auto myRetro = retro(foo); > > } > > Could you elaborate why? > > Ranges with const elements must be common; but what's the point of > const ranges? Const random access ranges are usable, but other const > ranges seem to be useless since popFront and popBack can't be const. > > > Shin > _______________________________________________
The case I ran into that I think is a useful one is being able to use const ranges as input to various algorithms, map and filter being the most obvious choices. In my case I was filtering out a few specific records of a range of records. Later, Brad _______________________________________________ phobos mailing list [email protected] http://lists.puremagic.com/mailman/listinfo/phobos
