id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
61	regex iterator requirement	lfarkas	John Maddock	"{{{
regex require that iterator (eg for regex_match) has 
default constructor. AFAIK it's not a requirement for 
any (neither bidirectional) iterator to has a default 
constructor. eg for user defined iterator sometime it's 
a preformance decrease for iterator. eg. I'd like to
use regex to search a file. if the file fit into the 
memory I use wstring's iterator, but if not I have to 
create an own bi_istream_iterator (since 
std::istream_iterator is not bidirectional:-(). after 
that I made an iterator which encapsulate these two
iterator, but this hasn't deafult constructor and if I 
have to make a default one, than I'have to redesign it 
and add another bool member. what I realy wan't that 
the encapsulator iterator be as samll as possible, but 
it's getting harder and harder:-(((
IMHO it's a bug in regex implementation.
yours.
}}}"	Bugs	closed		regex	None		Invalid