Le 05/11/2012 04:21, Jonathan M Davis a écrit :
However, that means that we need to be very clear about the fact that input ranges can have transient fronts and that algorithms cannot assume that their fronts are not transient (something that only you appear to have thought was clear).
Note that this break inputRange.array(); Which seems like a really big problem to me.
We then either have to change a bunch of algorithms so that they require forward ranges, or we need to create a trait which can determine whether front is transient in it least some cases (it would still be claiming that front is transient in some cases where it isn't, because it can't know for sure, but we'd at least be able to figure it out in some cases), and make algorithms use that in their constraints when they deal with input ranges. std.array.array would be a prime case where an algorithm would have to be changed, because it can't function with a transient front, and it's a prime example of a function that you'd normally expect to work with an input range. And this _will_ break code. It'll allow us to fix the ByLine problem though. - Jonathan M Davis
