From: Brian McNamara <[EMAIL PROTECTED]> > A question I should I asked before: why were you using FC++ in the > first place? (That sounds too accusatory. :) ) What feature(s) > motivated its use? Can you give an example of a "linear algebra > pipeline" that you might want to express as a functoid (or something)? > I'm afraid I don't have a good enough sense of the domain and what FC++ > features you wanted; there may be some useful solution along a > completely different path...
This was more than a year ago so I am rebuilding from memory. Why FC++ I found myself writing some codes where I wanted to perform a set of linear algebra operations on some vectors such as cosine_angle((normalize(sum_into(vec_a, scale(new_data_vec_a,5))),normalize(sum_into(vec_b,new_data_vec_b))) which would return a double and lots of side effects from 4 vector arguments. This is just from memory tho. and I got very tired of writing new function objects every time I wanted to change something a little bit. I wanted to be able to write these equations inline to be used by my other algorithms as functions. > completely different path Surely there are many :-) I ended up deciding that it wasn't important and just had a function object with a switch statement selecting one of a bunch of different such "pipelines", so when I wanted to use a new one I'd just add it to the switch. very elegant ;-) Meanwhile my officemate would be blabbing about monads and continuations and things like that... Joel _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
