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Subject: Re: [boost] [config] explicit call of operator templates / msvc bug workaround
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-05-29 13:56:22


Stefan Strasser wrote:
> is there already a macro in Boost.Config that allows you to insert the
> "template" keyword in the following code for those compilers that
> require it?
> struct functor{
> template<class T>
> void operator()();
> };
> template<class F>
> void g(F f){
> f.template operator()<int>(); //(1) works with GCC and comeau
> f.operator()<int>(); //(2) works with MSVC
> }
> this apparently only applies to operator calls. MSVC accepts both (1)
> and (2) for regular functions.
> (instantiating the operator template with an object of type T as
> argument, like mpl::for_each does, is not an option. I can't construct
> T.)

Why do you want to define this as operator(), when
you can't use it as an operator? Can you deal with
this the same way you would for for_each?

template<class T>
struct wrap {};

struct functor {
    template<class T>
    void operator()(wrap<T>);

In Christ,
Steven Watanabe

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