Functional Programming in Ember: Daniel Chappell at Q2 eBanking
We talk functional programming in Ember, functional programming in other languages (including languages that transpile to Javascript), and functional programming in theory.
This episode was originally posted to real-world-ember.com on Feb 18, 2016. http://www.real-world-ember.com/8
Learn Ember 2 at https://www.emberschool.com
Daniel Chappell
2.5 years programming exp, previous career was as a photographer
motivation for starting programming was getting out of photography, but he soon came to love programming for itself
functional programming
functional style makes codebase safer and easier to change and collaborate on
Computed Properties in Ember are pure functions - https://www.emberscreencasts.com/tags...
Should separate code into functional and imperative pieces, with imperative as small as possible
Recognized a lot of Functional philosophy in Ember
Most Ember code can be turned into Computed Properties
Types of Ember Code where mutation are fine: hooks and actions
These happen based on user actions- changing the route, changing data, interacting with the screen
Computed Properties are as trustworthy as functional properties thanks to how Ember updates them for us
Data Flow
Elmber - Please create!
Javascript is getting way better! Thanks TC39 and Babel.js!
ES6 + Babel has made transpiling cool whereas it wasn’t before (Somewhere, Jeremy Ashkenas weeps)
Coffeescript helped us understand Javascript
Type systems
Algebraic data types
Not an expert in all of FP, but it informs how he writes code
Javascript facilitates multi-paradigm coding
“Patterns are language features that haven’t been implemented yet"
Patterns are the testing ground for new ways of organizing code
Javascript is flexible enough to emulate most other languages’ patterns
Scheme is another example of a language that is flexible enough to emulate other languages’ patterns
He invests in eMacs because he wants to mess around with lisp
Q2 eBanking
Provides high-quality banking software for small local banks that wouldn’t be able to build one themselves
Web, Android, and iOS experiences all from the same Ember codebase
Mission: keep small community banks/credit unions competitive with the big banks
Jeffrey just opened a business account with a Q2-affiliated bank, and the software is great
Ember has been great for the project- especially the commitment to semantic versioning
They’re hiring!
You can work with Ember all day every day
If you’re investing your time in Ember, they want to talk to you
Reach out to @josephdchappell on Twitter
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