mr.spoon21 at gmail.com
Sun Sep 14 20:55:02 CEST 2008
>I believe you are mixing up class *inheritance* and *abstract* classes.
>Class inheritance (with Python has has for years) is how one class inherits >behavior/properties/attributes from another class. The class being inherited from is >called the base class. This is probably what you want.
Well, I know the difference between an abstract class and an inherited
one. The idea was to create a main class Note, with abstract methods,
and implement these methods in the other classes.
On Sun, Sep 14, 2008 at 7:56 PM, Roy Smith <roy at panix.com> wrote:
> What properties or behaviors does SharpNote have which NaturalNote doesn't?
> Unless there is some new behavior, you don't need subclasses.
Well, from a SharpNote I can obtain the relative NaturalNote. So if I
have a C# I can call
natural('C#') and get 'C'
While in the class NaturalNote I don't need such a method, but I need
two methods to get the sharped and flatted version
> Are you also going to have DoubleSharpNote and DoubleFlatNote?
Yes, that's an option.
> Consider the following code:
> note1 = SharpNote("E4")
> note2 = NaturalNote("F4")
> if note1 == note2:
> print "the same note"
> print "different notes"
> what should it print?
Well, that's not so simple. The idea is that I use a notation (A, B,
C, D...) and an integer (a distance expressed in semitones) to
identify a note.
Anyway, I think I need an abstract class. Or not?
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