From: Jim Freeze <jim@...>
Date: 2001-05-24T02:40:50+09:00
Subject: [ruby-talk:15605] Re: How to avoid spelling mistakes of variable names

On Thu, 24 May 2001, Dave Thomas wrote:

> ndrochak@gol.com (Nick Drochak) writes:
>
> > Since Ruby does not require a variable to be declared, do people find
> > that they often have bugs related to mistyping variable names?
>
> Actually, this is not quite a true statement.
>
> The first assignment to a local variable that Ruby sees in a scope
> adds that variable to the scope. If you try to use a name isn't a
> variable in that scope, or that doesn't correspond to a method, you'll
> get a warning:
>
>
>     fred = 1
>     bert = frde + 1
> #=>
>     undefined local variable or method `frde'

Yes, but this does not help when you mispell the left hand word:

      fred = 1
      betr = fred + 1

Jim

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Jim Freeze
jim@freeze.org
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