TEAM-ADA Archives

Team Ada: Ada Programming Language Advocacy


Options: Use Classic View

Use Monospaced Font
Show HTML Part by Default
Show All Mail Headers

Topic: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Matthew Heaney <[log in to unmask]>
Sun, 12 Sep 1999 21:09:50 -0400
text/plain (35 lines)
The article "Observing a Subject's Attributes" has been posted to the Ada95
patterns list.  It appears under "September 1999" in the patterns archive.


All the Ada95 source code is included in the message.

Here's the introduction:

In previous implementations of the Observer pattern, the observer would
query the entire state of the subject during a notification, because it
had no way of knowing which specific attribute had changed.

Here, we vary the pattern so that the observer can observe each subject
attribute individually, so it only has to display the attribute that has

You can subscribe to the Ada95 patterns list by sending the message (body)

subscribe patterns <your full name>

to the ACM mailing list server.

<mailto:[log in to unmask]>

You can send comments and questions to the Ada95 patterns list, or to me

<mailto:[log in to unmask]>
<mailto:[log in to unmask]>