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Day and night are objects of type time of Morning. Think of it like a Boolean, where it's true or false

As tilly pointed out, "day" and "night" are not boolean. It's clear that 3:00 AM is night, and 1:00 PM is day, but conditions around twilight become difficult to seperate night and day. In fact, you can take mesurements at the same lattitude but different logitudes and get different values for night and day (even ignoring the Earth's tilt), because higher spots will see the sun longer, and lower spots might be obscured by mountains.

IMHO, these boundry conditions are too often ignored as "noise" in mathmatics and science. It wasn't until the study of Chaos theory and fractals that people started realizing just how facinating boundry conditions really are.

the definition of OO is clear

The only "clear" definition of OO is so broad that it becomes useless in practice. Too many people think different ways on OO. Which is one reason I like Perl--it allows many different object systems to coexist and lets you pick the best one.

----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

: () { :|:& };:

Note: All code is untested, unless otherwise stated


In reply to Re: Re: The world is not object oriented by hardburn
in thread The world is not object oriented by tilly

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