Re: [Boost-users] Help with a boost::lambda problem and boost::array?

Is there a solution?

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Does anyone have an idea why the following doesn't compile: using lambda::_1; using lambda::_2; boost::function&)> f = lambda::ret<double>(_1[0] * _1[1]);

It probably fails because Boost.Lambda doesn't know how to find the return type of the subscript operator for boost::array.

In Christ, Steven Watanabe

Let me answer my question: the 'bind' version that works well: typedef boost::array array_t; typedef array_t::const_reference (array_t::*func_t)(array_t::size_type) const; func_t subscript_f = &array_t::operator[]; boost::function f; f = lambda::bind(std::multiplies<double>(), lambda::bind(subscript_f, lambda::_1, 0), lambda::bind(subscript_f, lambda::_1, 1)); Thank you all for your inspiration. And still open for better solutions. B/Rgds Max