On 12/14/2006 08:52 AM, Thorsten Ottosen wrote: [snip]
I have used tuples in a similar manner, but I kinda think its not the best to do; a named tuple would be more appropriate, or maybe just a struct.
What bothers me is the self-explanatory properties are lost; I can't figure out what tuple element that means what by just looking at the code. Is it
tie(eval,dev1,dev2) = find_root(...)
or
tie(dev1,dev2,eval) = find_root(...)
?
This "named tuple" is essentially the composite_product whose test code is here: http://boost.cvs.sourceforge.net/boost-sandbox/boost-sandbox/libs/indexed_ty... Instead of field names, numerators in an enumeration are used. For example, in the above test, the numerators, {a,b,c} of the enumeration, indices, correspond to the field names in the following struct: struct r_struct { field_ndx<a> a_field; field_ndx<b> b_field; field_ndx<c> c_field; };