Oops, I guess this means readf, unformat, etc are incomplete? On Feb 16, 2010, at 7:12 PM, Andrei Alexandrescu wrote:
> Heh, incidentally I was looking over the same issue recently. > > I think we need for a much more radical approach. We need to be able to parse > any stream of characters (that means lookahead == 1) and stop as soon as the > meaningful input has ended. > > Walter wrote a while back some solid floating point parsing routines for dmc. > I think we should start with those and adapt them to work with input streams > instead of strings. > > This applies to std.format too, which is in dire need of an overhaul to make > it work with all streams. > > Andrei > > David Simcha wrote: >> I looked into creating D implementations of equivalent functions to strtold, >> etc. to address bug 3758 >> (http://d.puremagic.com/issues/show_bug.cgi?id=3758). It seems like >> converting strings to floats is actually pretty hard to do right, i.e. >> without any loss of precision. However, the inefficiency of requiring >> several heap allocations per conversions hurts when reading in large files. >> From some measurements I did, it seems like the heap allocation and >> associated garbage collection is the bigger source of overhead than the >> string copying. Is everyone ok with me optimizing std.conv.parse to place >> the zero-terminated version of the string on the stack if it's reasonably >> small as a temporary fix? >> _______________________________________________ >> phobos mailing list >> [email protected] >> http://lists.puremagic.com/mailman/listinfo/phobos > _______________________________________________ > phobos mailing list > [email protected] > http://lists.puremagic.com/mailman/listinfo/phobos _______________________________________________ phobos mailing list [email protected] http://lists.puremagic.com/mailman/listinfo/phobos
