Dispatching a function based on a message

ruby-talk
1

I'm back writing my small network app (IM client) and I need to
dispatch functions based on the messages received from the server. For
example, if my app gets a string like

MSG msg_number som_other_text

it should call the function process_MSG and pass some_other_text as an argument.

How can I do that? I was thinking of a big case statement, but I'm not
sure that's the Ruby Way. Probably a hash with MSGs as keys and
process_MSGs as values?

Thanks for your ideas,
Ed

···

--
Alcohol is the anesthesia by which we endure the operation of life.
-- George Bernard Shaw

2

--- Edgardo Hames <ehames@gmail.com> wrote:

I'm back writing my small network app (IM client)
and I need to
dispatch functions based on the messages received
from the server. For
example, if my app gets a string like

MSG msg_number som_other_text

it should call the function process_MSG and pass
some_other_text as an argument.

How can I do that? I was thinking of a big case
statement, but I'm not
sure that's the Ruby Way. Probably a hash with MSGs
as keys and
process_MSGs as values?

You could try using the send method

class MyClass
  def process_MSG(val)
     #do something
  end
end

if you've split the message up into the variables msg,
msg_number, other_text then you'd just need to do

processor = MyClass.new
processor.send("process_#{msg), other_text)

HTH

···

--
Mark Sparshatt

___________________________________________________________
ALL-NEW Yahoo! Messenger - all new features - even more fun! http://uk.messenger.yahoo.com

3

"Mark Sparshatt" <msparshatt@yahoo.co.uk> schrieb im Newsbeitrag news:20050205172919.63235.qmail@web53106.mail.yahoo.com...

I'm back writing my small network app (IM client)
and I need to
dispatch functions based on the messages received
from the server. For
example, if my app gets a string like

MSG msg_number som_other_text

it should call the function process_MSG and pass
some_other_text as an argument.

How can I do that? I was thinking of a big case
statement, but I'm not
sure that's the Ruby Way. Probably a hash with MSGs
as keys and
process_MSGs as values?

You could try using the send method

class MyClass
def process_MSG(val)
    #do something
end
end

if you've split the message up into the variables msg,
msg_number, other_text then you'd just need to do

processor = MyClass.new
processor.send("process_#{msg), other_text)

HTH

We can even wrap that:

class MyClass
  def process_MSG(val) ... end

  def receive(line)
    if /\A(\S+)\s+\d+\s+(.*)\Z/ =~ line
      send($1,$2)
    end
  end
end

Kind regards

    robert

···

--- Edgardo Hames <ehames@gmail.com> wrote: