Comments (5)
This is actually the most common practice in most pubsub implementations
Could you give examples of this?
from pubsubjs.
Well, maybe I over did it, but to name a few that do follow this pattern:
Stapes
http://hay.github.io/stapes/#m-events
Backbone
http://backbonejs.org/#Events-off
jQuery
EventEmitter
https://github.com/Wolfy87/EventEmitter/blob/master/docs/api.md#removelisteners
Minievents
https://github.com/allouis/minivents
RadioJS
http://radio.uxder.com/documentation.html
Shotgun
https://github.com/jgnewman/shotgun#unsubscribing
Also note that DOM events and Node.js events follow slightly similar pattern of first param being event type, and the second being the handler.
I think that in pub/sub implementations, allowing to send only the type argument is quite handy.
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Just to be clear, of all the listed examples, only RadioJS is a publish/subscribe implementation, the rest are implementations of the Observer pattern.
Addy Osmani explains the differences between the two patterns in his excellent book Learning JavaScript Design Patterns
from pubsubjs.
Pull request #62 will implement a clearSubscriptions
method that will do what you request
from pubsubjs.
@mroderick thanks for note! And good to see this getting in (:
from pubsubjs.
Related Issues (20)
- Allow subscribing to multiple topics at once with same callback HOT 1
- Import vs window - unpredictable publishers HOT 5
- countSubscriptions always returns 1 HOT 4
- getSubscriptions wrong result
- use it in react hooks Why are requests repeated HOT 3
- PubSub does not work under Context API HOT 4
- Add "files" field in package.json HOT 1
- PubSub keep using the initial state value in .subscribe() - ReactJS HOT 4
- Any tests examples approach on this library? (with React) HOT 2
- Add the possibility to await sync events (publishAwait) HOT 3
- I can't subscribe event while publish any topic, in different controller
- Rename "PubSub" variable for multiple instances HOT 1
- Feature wanted - RegExp HOT 1
- clearSubscriptions would clear different topics which includes the same string
- ReadMe points to wrong jsdelivr package HOT 5
- Publish Latest value HOT 2
- Wildcard support for subscriptions? HOT 2
- Troubleshooting event subscription not working in a React component HOT 1
- not working on k8s HOT 1
- Support for Topic Pattern Matching in Subscriptions
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