From: Ben Bleything <ben@...>
Date: 2007-09-17T02:40:04+09:00
Subject: Re: bug with assignment?

On Mon, Sep 17, 2007, Mukund wrote:
> Here a["alpha"] and b["alpha"] both contain an array of [23,100].
> Why??

It's this line, right here.

> a["alpha"]=b["alpha"]=[]

What's happening is the a["alpha"] is getting the result of
b["alpha"]=[], which is the empty array on the far-right of the
assignment.  Both a["alpha"] and b["alpha"] contain a reference to the
same array.

> If I remove the multiple assignment,
> a["alpha"]=[]
> b["alpha"]=[]

a["alpha"] and b["alpha"] now are both references to *different* empty
arrays.

Hope that helps :)

Ben