From: Gennady Bystritsky <Gennady.Bystritsky@...>
Date: 2008-04-29T23:17:26+09:00
Subject: Re: References in Ruby

[Sorry for the top posting, webmail not quoting properly]

Apparently you are thinking about references in C++ sense -- once assigned, subsequent assignment operations change the underlying object. It is NOT like that in  Ruby when you are assigning to variables. Think about it more like a pointer assignment in C.

char c = 'c', d = 'd';
char* p = &c;

p = &d;

The last operation does not change the content of variable c, simply changes the pointer value in p to "refer" to d.

Gennady.

________________________________________
From: list-bounce@example.com [list-bounce@example.com] On Behalf Of Marcin Tyman [m.tyman@interia.pl]
Sent: Tuesday, April 29, 2008 4:02 AM
To: ruby-talk ML
Subject: References in Ruby

Hi guys,

I was quite a bit confused when write following code:

a = 10
b = a
a = 50

puts b   # -> puts 10

Why?? Since everything is a reference in Ruby I expected "puts 50".


Thanks for answer.
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