From: Chris Pine <nemo@...>
Date: 2003-04-11T00:46:44+09:00
Subject: Re: Array Sutraction

----- Original Message -----
From: "Hal E. Fulton" <hal9000@hypermetrics.com>

Hmmmmmmm.

x = ["one", "one", "two", "two", "two"]
y = ["two"]

What do you want x-y to be here?
----------------------------

What about [1,2,1,2] - [1]?

My point is, which `1' would be the *right* one to remove?  Neither is
obvious... only removing all of them makes sense to me.

(Mind you, array subtraction only barely makes sense to me at all if it
isn't Set subtraction, which, now that we have the Set class, it isn't.)

Chris