On 04/27/2005 05:33 PM, Giovanni P. Deretta wrote: [snip]
to use some kind of tag instead of indexes). In code that i wrote there were a set of functions that had similar effects and had multiple return values (as tuples). The return values weren't the same, but all of them had a common types. Some generic code had to work with this functions and needed to extract this common types from the tuples. A typed get was exactly what i needed. Fusion 'find' would probably have done the job as well, but i did not know it untill now.
I amended the code in vault: http://boost-sandbox.sourceforge.net/vault/index.php?&direction=0&order=&directory=cppljevans by adding templated member function: template<class FieldType> FieldType& find_type(void) ; to template tuple_indexed. Would this satisfy your needs?