From: Gavri Savio Fernandez <Gavri_F@...>
Date: 2004-01-29T05:47:13+09:00
Subject: Re: Type

> From: Noixe [mailto:Noixe@email.it]
> Subject: Type
> 
> Is there a method to know a type of object?
> 

$ri Object#class

This is a test 'ri'. Please report errors and omissions
on http://www.rubygarden.org/ruby?RIOnePointEight

----------------------------------------------------------- Object#class
     obj.class -> aClass
------------------------------------------------------------------------
     Returns the class of obj, now preferred over Object#type, as an
     object's type in Ruby is only loosely tied to that object's class.
     This method must always be called with an explicit receiver, as
     class is also a reserved word in Ruby.
        1.class      #=> Fixnum
        self.class   #=> Object

> For example:
> 
> x = 1
> y = [1, 2, 3]
> z = {1 => "one", 2 => "two"}
> 
> 
> puts x.type # Must print "int"
> puts x.type # Must print "array"
> puts x.type # Must print "hash"

irb> puts ({1 => "2"}).class
Hash
=> nil
irb> puts [1, 2, 3].class
Array
=> nil
irb> puts 1.class
Fixnum
=> nil

> 
> Thanks
> --
> Noixe
> 

gavri