propensive

object Algebra {

  // Build up increasingly complex algebras
  trait Magma[T] {
    def add(x : T, y : T) : T
  }

  trait Monoid[T] extends Magma[T] {
    def zero : T
  }

propensive

import rapture.orm._

object TestDb extends App {

  // Create a database pool
  val DbPool = new PostgresDbPool("localhost", "conferencedb", "operator", "letmein")

  // Define the database schema
  implicit object Conference extends Table(new Conference) {
    def allActive()(implicit db : Db) = selectFrom("WHERE active").all()

propensive

import rapture.io._

// Let's parse some JSON
val src: Json = Json.parse("""
{
  "foo": "Hello world",
  "bar": {
    "baz": 42
  }
}

propensive

import rapture.io._
import scala.async._
import Async._
import scala.concurrent._
import ExecutionContext.Implicits.global
import strategy.returnFutures
implicit val encoding = Encodings.`UTF-8`

val forStyle = for {
  src <- (Http / "rapture.io" / "example.json").slurp[Char]

propensive

Welcome to Scala version 2.10.2 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_24).
Type in expressions to have them evaluated.
Type :help for more information.

scala> import rapture.core._
import rapture.core._

scala> import rapture.json._
import rapture.json._

propensive

Welcome to Scala version 2.10.4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_51).
Type in expressions to have them evaluated.
Type :help for more information.

scala> System.getProperty("user.timezone")
res0: String = ""

scala> new java.util.Date()
res1: java.util.Date = Mon May 12 12:49:35 CEST 2014

propensive

Welcome to Scala version 2.10.4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_51).
Type in expressions to have them evaluated.
Type :help for more information.

scala> import rapture.core._; import rapture.data._; import rapture.json._
import rapture.core._
import rapture.data._
import rapture.json._

scala> import jsonBackends.scalaJson._

propensive

scala> import formatters.humanReadable
import formatters.humanReadable

scala> Json.format(json"""{ "foo": ["bar", "baz", 42] }""")
res0: String = 
{
 "foo": [
  "bar",
  "baz",
  42

propensive

Welcome to Scala version 2.10.4 (OpenJDK 64-Bit Server VM, Java 1.6.0_27).
Type in expressions to have them evaluated.
Type :help for more information.

scala> import rapture.json._
import rapture.json._

scala> import jsonBackends.scalaJson._
import jsonBackends.scalaJson._

propensive

scala> case class Bar(file: java.io.File) // We can't extract a File
defined class Bar

scala> case class Foo(bar: Bar) // therefore we can't extract a Bar
defined class Foo

scala> json""{ "bar": { "file": "..." } }""".as[Foo]
Could not generate a Json extractor for case class Bar because a Json extractor for parameter `file' of type java.io.File could not be found
Could not generate a Json extractor for case class Foo because a Json extractor for parameter `bar' of type Bar could not be found
<console>:21: error: cannot extract type Foo from rapture.json.Json.