From: Morton Goldberg <m_goldberg@...>
Date: 2007-06-21T16:12:47+09:00
Subject: Re: Two Problems From a Newbie


On Jun 21, 2007, at 1:50 AM, danielj wrote:

> def mtdarry
>
>   10.times do |num|
>
>     square = num * num
>
>     return num, square if num > 5
>
>   end
>
> end
>
> num, square = mtdarry
>
> puts num
> puts square
>
> I can't figure out why this outputs they way it does? I know it is
> simple but I just don't get it.

The above is equivalent to:

<code>
def foo
    10.times do |n|
       a = [n, n * n]
       return a if n > 5
    end
end
num, square = foo
puts num, square
</code>

But consider the following:

<code>
def foo
    10.times { |n| return [n, n * n] if n > 5 }
end
num, square = foo
puts num, square
</code>

This is better because it only computes the array for n = 6, not for  
0..6.

> Secondly, I have just started using the SCiTE editor instead of
> metapad and it is great! However, when I try to get a string it won't
> let me type into the window that pops up.

Can't help you here. Don't know anything about the SCiTE editor.

Regards, Morton