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From: franka@mmintl.UUCP
Newsgroups: comp.lang.smalltalk
Subject: Block variables
Message-ID: <2084@mmintl.UUCP>
Date: Thu, 2-Apr-87 20:38:44 EST
Article-I.D.: mmintl.2084
Posted: Thu Apr  2 20:38:44 1987
Date-Received: Sun, 5-Apr-87 10:19:05 EST
Reply-To: franka@mmintl.UUCP (Frank Adams)
Organization: Multimate International, E. Hartford, CT
Lines: 28

[Not food]

What is the proper scope for the name of a variable which is a block
argument?  I had assumed it was the block only, but Smalltalk/V treats it as
the entire method.  Is this a bug?

As an example of what I mean, consider the following:

In UndefinedObject, define:

test
    | x |
    x := 3.
    ^Array with: [ :x | x + 1] with: [x]

Now evaluate:

| temp |
temp := nil test.
(temp at: 1) value: 7.
(temp at: 2) value

Should the result be 3 or 7?

(I am using ":=" as the assignment operator, as Smalltalk/V does.)

Frank Adams                           ihnp4!philabs!pwa-b!mmintl!franka
Ashton-Tate          52 Oakland Ave North         E. Hartford, CT 06108