On Wed 09 Jan 2013 09:26:15 PM EST, Ed Owens wrote:
I'm working my way through Chun's book "Core Python Applications
Programming" and can't get one of the examples to actually work. In
trying to analyze the problem (good learning approach) I had troubles
understanding the interactions between the two classes of objects. As
an old FORTRAN programmer, I picked up my pencil to flowchart the
code, then realized I didn't know how to flowchart an OOP.
Google led me to UML (Unified Modeling Language) and OMG (apparently
Oh My God!!!). Looks more complicated than the code I'm trying to
understand.
It there a technique that people use to figure out how do design OOP
models, objects, and the information flow?
Thanks for helping a newby.
Ed
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Here's what I do sometimes:
1. write down the steps that need to be done
2. write pseudo-code for the steps
3. revise
4. make one single class with many methods. If you are familiar with
programming with just functions, this is the same but instead of
functions you have methods.
5. note which methods should logically be split up into separate
classes & refactor
Once you do this with a few programs, you'll be able to start
with several classes right away, without the need for intermediary
'main' class.
I haven't used diagrams to design in a long time so I won't comment
on that.
HTH, - m
--
Lark's Tongue Guide to Python: http://lightbird.net/larks/
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