es6 generators
(they rule)
Gerred Dillon
t: @justicefries
g: gerred
http://www.gerred.com
Protectwise - we're hiring!
WebGL
Canvas
SVG
D3
Backbone
React
ES6 Harmony
Node
Go
Agenda
- Current state of async code
- Why synchronous?
- Intro to Generators
- Generators - Part 1
- Iteration
- Lazy Sequences
- Generators - Part 2
- Flow Control
- Channels
- Web Frameworks
- Q&A
javascript
an asynchronous history
Callbacks
Events
Promises
still spaghetti hell all the way down
why synchronous (looking)?
Go
Erlang
ES6 Generators
(and more!)
Harmony Generators
"First-class coroutines, represented as objects encapsulating suspended execution contexts (i.e., function activations). Prior art: Python, Icon, Lua, Scheme, Smalltalk."
- Harmony Generators Proposal
Harmony Generators
Allows suspension of a function's execution
until resolved - everything else outside of that
execution continues.
Compatibility
Chrome - 30-33 with experimental JS flag
Firefox >= 25 (had since 2 but standardized)
Node >= 0.11 w/ --harmony option
API crash course
Generators - Part 1
Lazy Sequences
Infinite Iteration
Generators - Part 2
Flow Control
Co
task.js
Koa
Koa
Minimalistic web framework
Spiritual successor to Express
Generator based, all the way down
Channels
Go-style concurrency in JavaScript
Handling of events
Potentially more powerful than
promise-based generator implementations
Thanks!
Gerred Dillon
http://www.gerred.com
@justicefries
github: gerred
Resources:
Es6 Generators
By Gerred Dillon