Trying some FOOP programming: timeutilities.lsp

cormullion · Post by **cormullion** » Wed Sep 10, 2008 5:39 pm

I've been having a go at writing some FOOP-style functions, mainly as a training exercise, but also for use too, and I've put my first attempt at a module up at http://unbalanced-parentheses.nfshost.c ... index.html.

It's a bit rough at present (nowhere near as polished as Jeff's newLISP modules...) so I'd appreciate any suggestions or criticisms, either here or by pm/email...

thanks!

Lutz · Post by **Lutz** » Wed Sep 10, 2008 7:00 pm

very nice, I will put a link here: http://www.newlisp.org/modules/

cormullion · Post by **cormullion** » Wed Sep 10, 2008 7:10 pm

thanks!

m i c h a e l · Post by **m i c h a e l** » Thu Sep 11, 2008 3:32 pm

Hi cormullion!

Great job on your Time and Duration modules. You're really getting the hang of this FOOP thing.

I'm impressed with the number of useful methods you've managed to include (:period and :shift, for example), and your constructor is so versatile, allowing for many ways to create a Time object.

This is a perfect example of practical FOOP. Well-done.

m i c h a e l

cormullion · Post by **cormullion** » Thu Sep 11, 2008 4:23 pm

Cool - thanks!

The immutable objects principle seems a happy fit for this particular application. I find it harder to think about objects for more abstract applications, where you just want to change the objects, not make modified copies...