Jed Wesley-Smith jedws

pchiusano / partask.scala

Created February 12, 2014 22:10

Applicative for scalaz.concurrent.Task that 'automatically' parallelizes the applicative operations

	import scalaz.Applicative
	import scalaz.concurrent.Task

	/**
	* This `Applicative[Task]` runs tasks in parallel, by defining
	* `ap` and `apply2` in terms of `mapBoth`. This differs from the
	* default `Applicative[Task]`, where effects are sequenced
	* deterministically, in left to right order.
	*/
	val T = new Applicative[Task] {

milessabin / gist:6166101

Created August 6, 2013 16:26

Encoding records in #Scala as an HList of values tagged with the singleton types of their keys.

	scala> import SingletonTypes._ ; import Record._
	import SingletonTypes._
	import Record._

	scala> val r = "name" ->> "foo" :: "age" ->> 1 :: "lastName" ->> "bar" :: HNil
	r: shapeless.::[String with Object{type keyType = String("name")},shapeless.::[Int with Object{type keyType = String("age")},shapeless.::[String with Object{type keyType = String("lastName")},shapeless.HNil]]] = foo :: 1 :: bar :: HNil

travisbrown / needle-in-haystack.scala

Created November 13, 2012 22:57

Digging through arbitrarily nested case classes, tuples, and lists

	/**
	* Digging through arbitrarily nested case classes, tuples, and lists
	* by Travis Brown
	*
	* In response to this question by Channing Walton on the Shapeless dev list:
	*
	* https://groups.google.com/d/msg/shapeless-dev/hn7_U21tupI/Zm9h3uNb51gJ
	*
	* Tested with Scala 2.9.2 and Shapeless 1.2.3. Should work on 1.2.2 with minor edits.
	*/