boost-phoenix

I'm a victim of error "LNK1179: invalid or corrupt file: duplicate COMDAT" and these sources lead me to believe that by not using phoenix I could avoid this error. (This is a follow-up to my previous question .) I want to replace boost::phoenix with something else. Maybe boost::bind but I don't see how I can give it access to karma::_val . The following code fails to compile on VC9 with error C2825: 'F': must be a class or namespace when followed by '::' #include <boost/config/warning_disable.hpp> #include <boost/foreach.hpp> #include <boost/assign/list_of.hpp> #include <boost/range/adaptors

In the Boost Phoenix article, "Transforming the Expression Tree", here , a set of specialisations of a custom invert_actions class, are used to invert binary arithmetic expressions. For example a+b becomes a-b ; a*b becomes a/b ; and vice versa for both. This involves a recursive traversal of the expression tree - however, this traversal stops when an expression involving an operator not explicitly handled is encountered. For example, _1+_2-_3 will become _1-_2+_3 , but _1+_1&_2 will stay as it is (there is no handler for & ). let(_a = 1, _b = 2) [ _a+_b ] will also be left unchanged. I had

I recently started looking at boost phoenix, as replacement for lambda. Is phoenix a full replacement for lambda, or is there some lambda functionality which is not provided by phoenix? is phoenix mature? Are there any gotcha I should know about? my primary interest are operator composition, control statements and casts are less so Thanks This post answers all your questions. Phoenix is very mature. Phoenix and lambda will be merged. It will be the base for future lambda implementations. 来源： https://stackoverflow.com/questions/2852775/boost-lambda-versus-phoenix

This question is inspired from another topic which poses this question: Find the first value greater than user specified value from a map container which can be solved in several ways. A typical C++03 solution defines a dedicated function (or functor) and pass it to std::find_if as third argument. In C++11, one can avoid defining a dedicated function (or functor), and can instead make use of lambda as: auto it = std:: find_if(m.begin(), mp.end(), [n](const std::pair<std::string, int> & x) -> bool { return x.second > n; } ); which is the accepted answer . I'm still looking for a short and cool

This question already has answers here : Closed 6 years ago . Possible Duplicate: What are the benefits of using Boost.Phoenix? So I started reading the documentation for boost phoenix. However, I must admit that I don't quite understand the purpose of the library, especially since we have language support for lambdas in C++0x. Could someone please explain or give me an example? Mat Well, not all C++ compilers support C++0x for a start. Then there are some things that are not possible with C++0x but that are possible with phoenix. See this for instance: C++0x lambdas with template parameters?

I would like to define a rule based on a previously parsed value, i. e. the input string has the following structure: D <double number> or I <integer number> . I keep in a local boolean variable whether the first read character is D or I . The complete code is: #define BOOST_SPIRIT_USE_PHOENIX_V3 #include <boost/spirit/include/qi.hpp> #include <boost/spirit/include/phoenix.hpp> #include <string> namespace qi = boost::spirit::qi; namespace spirit = boost::spirit; namespace ascii = boost::spirit::ascii; using boost::phoenix::ref; template <typename Iterator> struct x_grammar : public qi::grammar