From: "Richard P. Groenewegen" <rpg@...2all.net>
Date: 2001-04-09T23:17:13+09:00
Subject: [ruby-talk:13576] about the the scope of a local variable

Hi,

In the Dave/Andrew book it says (on page 215): ``However, the scope of
a local variable is statically determined to be: the immediately
enclosing block, method definition, class definition, module
definition, or top-level program.''

Hence I thought that in the following situation

    +----------------+   +--------------------+ 
    | file: atest.rb |   | file: btest.rb     |
    +----------------+   +--------------------+
    | a = 10         |   | require 'atest.rb' |
    |                |   | puts a             |
    +----------------+   +--------------------+

the variable a would be avaible in the `puts' line, because it is only
enclosed by the top-level program.  But this gives a `underfined local
variable' error.  Why is this?  At first I thought that the
require-line maybe was implicitly surrounded by a block, but this is
not so: if I put `a = 1' before the require line, the value of a stays
1.  Is there any way to access the `a' in atest.rb?

Richard
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