Re: [ALACPP] correction to ostream_iterator

[Christopher Smith <x@xxxxxxxx>]

On Fri, 2003-08-15 at 11:44, Jon Stewart wrote:
> As to why it won't compile, it's a template function and I bet that the 
> lambda black magic delays type deduction, so ends can't figure out that 
> it's supposed to be templated off of ostream.

Yeah, this is basically the problem. The lambda libraries wrap "str <<
_1" into a lambda functor (as the error indicates). Lambda wants type
infrencing, and so does the stl (sometimes templates make it hard to be
completely orthogonal ;-). Lambda is very messy in general.

This will work:

ostream& operator<<(ostream& str, const vector<string>& rhs) {
    for_each(rhs.begin(), rhs.end(), 
	     str << _1 << static_cast<ostream&(*)(ostream&)>(endl));
    return str;
}

It will also make you sick. ;-)

-- 
Christopher Smith <x@xxxxxxxx>
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