[ruby-talk:5648] Re: local variables (nested, in-block, parameters, etc.)

Yukihiro Matsumoto wrote:

> Hi,
>
> ...

example 1:

>   i = nil
>   [1,2,3].each{|i| break if condition(i)}
>   p i
>
> Of course, rewriting it to
>

example 2:

>   x = nil
>   [1,2,3].each{|i| if condition(i)
>       x = i
>       break
>     end
>   }
>   p x
>
> is easy, but tiresome.  Yes, I'm lazy.
>
>                                                         matz.

I find the first form the be more intelligible with less effort than the second form.  I
am an extreme newbie to Ruby, though experienced in several other languages.

I would prefer that the code in example 1, if in a real program, use a different local
variable, but I did understand with little effort that it was intended to be a local
variable.  Any other choice would have increased my surprise.  Several languages that use
an approximately equivalent form also require that tie loop control variable be local.  I
think that the languages that don't make this choice are in the minority.  And deservedly
so.

-- (c) Charles Hixson
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