How CanJS Works - Observables and Computes built with Queues and Trees

Doors open at 5:30. I will kickoff presentation at 6:15.

Jimmy John's sandwiches will be provided to everyone by Bitovi.

========= If you'd like to understand how observable-based JavaScript frameworks (like Ember, Knockout, and Vue) work, join us Monday Dec 4th.

Specifically, we'll be building up our understanding of how observables and computed values work. While there are many forms of observables, CanJS's observables allow you to listen to when their value changes with the `.on` function as follows:

https://secure.meetupstatic.com/photos/event/c/8/f/8/600_465771448.jpeg

Computes are observables that combine other source observables. When the source observables change, computes automatically update themselves. In the following example, CanJS's `Compute`s are used to create a `fullName` compute that updates when either `first` or `last` change:

https://secure.meetupstatic.com/photos/event/c/9/e/6/600_465771686.jpeg

To implement observables, CanJS uses queues (https://en.wikipedia.org/wiki/Queue_(abstract_data_type)) and trees (https://en.wikipedia.org/wiki/Tree_(data_structure)), two useful data structures that we'll be exploring in this presentation.

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