From: David Vallner <david@...>
Date: 2006-10-09T07:57:03+09:00
Subject: Re: How to use a class

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Li Chen wrote:
> Now I have other questions: 1) After I write a class with some methods =
I=20
> want to save the file called test. Which extension is associated with=20
> this file(test.rb or else)? How do I create a new object from the file =

> called test from another script?
>=20

You save the file as test.rb, and then in the other file, use:
	require 'test'
to be able to use classes in it.

> 2)Which method is used globally for the following substitution ?
> s1=3D"AATTCCGG"     # original string
> s2=3D"TTAAGGCC"     # expected string, which means A->T, T->A, C->G, G-=
>C
>=20

irb(main):001:0> "AATTCCGG".tr("ATCG", "TAGC")
=3D> "TTAAGGCC"

David Vallner


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