Jonathan Stevens jphilipstevens

TAO

Geographically distributed, read-optimized, graph data store.
Favors availability and efficiency over consistency.
Developed by and used within Facebook (social graph).
Link to paper.

Before TAO

Facebook's servers directly accessed MySQL to read/write the social graph.

Advanced Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

Category theory jargon cheat sheet

A primer/refresher on the category theory concepts that most commonly crop up in conversations about Scala or FP. (Because it's embarassing when I forget this stuff!)

I'll be assuming Scalaz imports in code samples, and some of the code may be pseudo-Scala.

Functor

A functor is something that supports map.

	Originall From: Posted 2015-05-29 http://ubwg.net/b/full-list-of-ffmpeg-flags-and-options

	This is the complete list that’s outputted by ffmpeg when running ffmpeg -h full.

	usage: ffmpeg [options] [[infile options] -i infile]… {[outfile options] outfile}…

	Getting help:
	-h — print basic options
	-h long — print more options
	-h full — print all options (including all format and codec specific options, very long)

	//
	// Quick & Dirty Google Cloud Storage emulator for tests. Requires
	// `stream-buffers` from npm. Use it like this:
	//
	// `new MockStorage().bucket('my-bucket').file('my_file').createWriteStream()`
	//

	class MockStorage {
	buckets: {[name: string]: MockBucket};