Dear Boost users,
A (possibly naïve) question, as I'm a reasonably competent C programmer
but only a relative novice with C++, and just starting to get used to
concepts from libraries like Boost.
The BOOST_FOREACH macro provides a nice way to iterate over all the
contents of a container like a vector, list, etc. But what about when
several containers are involved?
I'll give a concrete-ish example from a problem I'm working on. I have
two vectors, vector v1 and vector<double> v2 where myClass is
a base class and v1.size()==v2.size(). Then, what I want to do is,
for(unsigned int i=0;ifunc(v2.at(i));
That works, of course; I'm just wondering if there is a more elegant or
compiler-friendly way of writing this along the lines of the
BOOST_FOREACH macro. Initialising separate iterators for both v1 and v2
seems ugly/lots of boilerplate. I have seen the solution here:
http://permalink.gmane.org/gmane.comp.lib.boost.user/31954
... but that seems less desirable because it involves using an extra
library which I don't think is standard in Linux distros.
I have the impression that the zip_iterator boost lib is useful here,
but did not fully understand if or how.
Can anyone advise?
Thanks & best wishes,
-- Joe
