From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2008-03-06T18:41:52+09:00
Subject: Re: Erratic result

On Thu, Mar 6, 2008 at 10:08 AM, coolgeng coolgeng
<coolgeng410@gmail.com> wrote:
> Yeah, it does work. But I really want to know what does it happen?
>  such as "puts  digits.each {|digit| dial(digit) }"

This:
puts  digits.each {|digit| dial(digit) }

is equivalent to this:

a = digits.each {|digit| dial(digit) }
puts a

The first line is the loop and prints each digit.
The second line prints the result of the each method.

> or "digits.each {|digit| dial(digit) }"

In this case you don't do anything with the return value of the each method.

>  the former will print the digits value at the last line,but the latter will
>  not

Jesus.