Can initialize b overloaded

ruby-talk
1

class Point

attr:x_pos,true
attr:y_pos,true

def initialize(x_pos,y_pos)
…
end

#can initialize b overloaded!

def initialize(some_instance_of_point)

@x_pos=some_instance_of_point.x_pos
…
end

end

  1. Is the above snippet of code valid one in Ruby
    If not why?

  2. How to comment multilines?

Thanx in advance
Lokesh

···

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2

Hello Sambasivan,

Friday, December 20, 2002, 10:13:01 AM, you wrote:

def initialize(x_pos,y_pos)
def initialize(some_instance_of_point)
#can initialize b overloaded!

no. use

def initialize(*args)
case args.size
when 1 …
when 2 …

  1. How to comment multilines?

=begin
…
=end

···

–
Best regards,
Bulat mailto:bulatz@integ.ru

3

Hi –

class Point

attr:x_pos,true
attr:y_pos,true

def initialize(x_pos,y_pos)
…
end

#can initialize b overloaded!

def initialize(some_instance_of_point)

@x_pos=some_instance_of_point.x_pos
…
end

end

  1. Is the above snippet of code valid one in Ruby
    If not why?

It’s valid, but it’s not overloading: it’s overriding. The most
recently defined method of a given name will be called, so your first
definition of #initialize will be discarded.

There’s a lot of discussion of method overloading, multiple dispatch,
etc. in the ruby-talk archive (http://www.ruby-talk.org). (Mainly
discussion of why Ruby doesn’t have them :slight_smile:

  1. How to comment multilines?

=begin
…
=end

or multiple #'s.

David

···

On Fri, 20 Dec 2002, Sambasivan LokeshKumar wrote:

–
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web: http://pirate.shu.edu/~blackdav