id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4427	for_each does not take a non-const Function object	chetant@…	Kohei Takahashi	"I'm trying to create a type of deserializer, templated by fusion types. I have a function object that I initialize with an input stream and its templatized operator() takes a record out of that stream and assigns it to a given input type.

I was trying to use fusion::foreach for this:


{{{
FusionType fvar;
EntryReader er(stream);
// This should call er for each entry in fvar
for_each(fvar, er);

}}}

The problem is that for_each only accepts const references to Function objects, so EntryReader::operator()(T& out) cannot read from the stream. Is it possible to make the Function reference in for_each non-const?"	Bugs	closed	Boost 1.68.0	fusion	Boost 1.43.0	Problem	fixed	for_each