From: mark sparshatt <msparshatt@...>
Date: 2005-04-19T01:41:52+09:00
Subject: Re: object.["somepropertyOrmethod"] == object.somepropertyOrmethod ?

falcon wrote:
> Does Ruby allow javascript like invocation of methods (or access to
> properties) like this:
> someProperty = "nameOfStudent"
> Object[someProperty]
> 
> rather than just Object.nameOfStudent?

The way to do this would be to use the send method

Object.send(someProperty)

Or you could define a [] method for your class

def [](propertyname)
   self.send(propertyname)
end

then you'd be able to use

Object[someProperty]

> 
> I need something like this because how an object is manipulated depends
> on runtime...basically it will be an experimental database system so
> users will be able to manipulate data in any way they desire.
> Iterators and lambda like functions make this very easy already.
> 
> Also, is there a limit to how deep one can do recursion?  Recursion can
> easily cause stack overflow error in Java, but some languages don't
> have that problem (I guess it is called tail call optimization).
> 

Ruby doesn't currently use tail call implementation so there is a limit 
to recursion.

IFAIK this'll be changed in Rite.


HTH

--
Mark Sparshatt