Application design advice

Ruby
1

I’m using the Eventmachine framework and being fairly new to ruby am
wondering about the best way to structure my code. Being an event
based framework there is a lot of jumping around in the code from one
callback to another.

In particular, most of the methods that I call to set callbacks take a
block. The code I want to run is usually going to be a method within
a class. For instance:

c = Transaction.new
ProtocolHandler.setcallback {|args| c.Process)

This seems to be the easiest way to get the callback to run my method
and pass it the arguments I need. Is there a better way to do this or
am I on the right track?

2

c = Transaction.new
ProtocolHandler.setcallback {|args| c.Process)

Oops, that should be…

ProtocolHandler.setcallback {|args| c.Process(args)}

Which brings up another question. How would I write a similar block
to handle multiple arguments where the number of arguments isn’t known
when I call setcallback?

3

On Thu, 10 Aug 2006, snacktime wrote:

ProtocolHandler.setcallback {|*args| c.Process(*args)}

-a

4

snacktime wrote:

c = Transaction.new
ProtocolHandler.setcallback {|args| c.Process)

Oops, that should be…

ProtocolHandler.setcallback {|args| c.Process(args)}

Which brings up another question. How would I write a similar block
to handle multiple arguments where the number of arguments isn’t known
when I call setcallback?

With the ‘splat’ operator:

ProtocolHandler.setcallback {|*args| c.Process(*args)}

-Justin

5

ProtocolHandler.setcallback {|*args| c.Process(*args)}

Of course it would be that easy… Thanks!

6

snacktime wrote:

c = Transaction.new
ProtocolHandler.setcallback {|args| c.Process)

Just a question: why is #Process capitalized?

Cheers,
Daniel