Class: MessageChannel

• Inheritance
• Description
• Class protocol
  • instance creation
• Instance protocol
  • evaluation

Inheritance:

   Object
   |
   +--Message
      |
      +--MessageSend
         |
         +--MessageChannel

Package:

stx:libbasic2

Category:

Kernel-Methods

Version:

rev: 1.5 date: 2003/08/29 19:21:23

user: cg

file: MessageChannel.st directory: libbasic2

module: stx stc-classLibrary: libbasic2

Description:

MessageChannel provides the same functionality as MessageSend.
It has been provided for ST-80 compatibility.

Like with MessageSend, instances of MessageChannel can be used for 
simulation programs.
They keep some receiver and selector and can be evaluated at any time later.
(think of them as a cheaper alternative to blocks).

In contrast to MessageSend, MessageChannels expect arguments to be passed
if all sends are going to the same receiver, use:

example:
    |q|

    q := Queue new:120.
    1 to:100 do:[:i |
        q nextPut:(MessageChannel receiver:i selector:#+).
    ].
    [q notEmpty] whileTrue:[
        |m|

        m := q next.
        (m value:1) printNL.
    ].

Class protocol:

 receiver: r selector: sel

Instance protocol:

 value

evaluate the messagesend with the original arguments