From: David Masover <ninja@...>
Date: 2010-05-14T04:34:36+09:00
Subject: Re: idiomatic way to pass multiple Procs/lambdas/blocks

On Thursday, May 13, 2010 11:03:37 am Chuck Remes wrote:
> Ruby doesn't allow for passing multiple blocks to a method so I'm faced
> with passing Procs or methods.
> 
> Is there a more idiomatic way to accomplish my intentions?

Not really. In JavaScript, it'd look like this:

send({
  callback: function() { ... },
  errback: function() { ... },
  ...
});

I'd suggest that route, actually, if you're going to have it just be a single 
method:


# 1.9-only syntax
send message, timeout: 123, callback: ->{...}, errback: ->{...}
# 1.8 syntax
send message, :timeout => 123, :callback => lambda{...}, :errback => 
lambda{...}


I'd also suggest a convenience class built around it, so I can instead do:


class Foo
  include YourModule

  def callback
    ...
  end
  def errback
    ...
  end
end

# Construct a new Foo and send a message with it
Foo.send(some_message)