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From: Terje Slettebø (tslettebo_at_[hidden])
Date: 2003-02-04 13:44:35

>From: "Paul A. Bristow" <boost_at_[hidden]>

> This looks most useful - potentionally :-(
> Alas the two files, test and composite_stream_operators.hpp
> won't compile on MSVC 7.0.
> test_composite_format.cpp
> test_composite_format.cpp(43) : error C2679: binary '<<' : no operator
> which takes a right-hand operand of type 'composite_format<T>' (or there
is no
> acceptable conversion)
> with
> [
> T=char (&)[3]
> ]
> and similarly for T=Map
> Is the cause/workaround obvious?

Looking at the error messages, and from what I've heard, it may be that it
has problems with template friends (which is what the operator<< is). If
that's the case, the workaround should be very easy - making it a
free-function template.

I did that, now, and it works. :)

At least the vector_pair_test(). The array2D_test() uses a little fancy
code, such as passing the type reference to array as a template parameter,
and it seems MSVC 7.0 has some problems with this. Anyway, that was just to
demonstrate usage with built-in types, as well, such as arrays. I'll look
into it.

There wasn't really any need for it to be a friend function, as it didn't
access any private parts. It was just defined inside the class for

I've also tested it on Intel C++ 7.0 in strict mode and g++ 3.2, so the code
should be conformant, at least.

Thanks for the report. I hadn't yet got around to do more portability
testing, but intend to do that, including writing more tests for it. I've
updated the version at Yahoo Groups with the above changes.



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