From: Avdi Grimm <avdi@...>
Date: 2008-04-08T06:25:16+09:00
Subject: Re: Method parameters Type

On Mon, Apr 7, 2008 at 5:12 PM, Phillip Gawlowski
<cmdjackryan@googlemail.com> wrote:
>  Ruby is?
>
>  Doesn't look like it to me, since I can change the type of a variable
>  with ease.

You're confusing static typing and strong typing.

In a weakly-typed language, like C, it is possible to cast an integer
as a, for instance, a char*, and then call string functions like
sprintf() on it and the compiler will compile it, the runtime will run
it, and it will wreak whatever havoc you please.  Most high-level
languages are strongly-typed, these days - neither Java or Ruby will
allow you to call a String method on an Integer.  You can assign
whatever object you want to a variable in Ruby - hence *dynamic*
typing - but that object will only ever allow you to call supported
methods on it; otherwise you'll get a NoMethodError.  Hence *strong*
typing.

-- 
Avdi