On Wednesday, February 14, 2018 10:14:44 Kagamin via Digitalmars-d-announce wrote: > It looks like EntityRange requires forward range, is it ok for a > parser?
It's very difficult in general to write a parser that isn't at least a forward range, because without that, you're stuck at only one character of look ahead unless you play a lot of games with putting data from the input range in a buffer so that you can keep it around to look at it again after you've looked farther ahead. Honestly, pure input ranges are borderline useless for a _lot_ of cases. It's generally only the cases where you only care about operating on each element individually irrespective of what's going on with other elements in the range that pure input ranges are really useable, and parsing definitely doesn't fall into that camp. - Jonathan M Davis
