Yes, they need significant work.
Andrei
On 03/10/2010 12:12 PM, Sean Kelly wrote:
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
_______________________________________________
phobos mailing list
[email protected]
http://lists.puremagic.com/mailman/listinfo/phobos
