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package com.kinja.foo.bar

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sealed trait Expr
case class Num(n: Int) extends Expr
case class Add(e1: Expr, e2: Expr) extends Expr
case class Sub(e1: Expr, e2: Expr) extends Expr

def value(e: Expr): Int = e match {
	case Num(n) => n
	case Add(e1, e2) => value(e1) + value(e2)
	case Sub(e1, e2) => value(e1) - value(e2)
}

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sealed trait Expr {
	def value: Int
}
case class Num(n: Int) extends Expr {
	def value = n
}
case class Add(e1: Expr, e2: Expr) extends Expr {
	def value = e1.value + e2.value
}
case class Sub(e1: Expr, e2: Expr) extends Expr {

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trait Value[T] {
	def eval(e: T): Int
}

def value[T: Value](e: T) = implicitly[Value[T]].eval(e)

sealed trait Expr

case class Num(n: Int) extends Expr

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def getSpeedByDistanceAndTime(x: Int, y: Int) = x / y

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def speed(distance: Distance, time: Time) = 
	Speed(distance.value / time.value)

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flag match {
	case true => f()
	case false => g()
}

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if (flag) f() else g()

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case class BlogMeta(
	description: Option[String] = None,
	descriptionHtml: Option[String] = None,
	timezone: String = "America/New_York",
	properties: Option[String] = None,
	adminProperties: Option[String] = None,
	showLikesInLatest: Option[Boolean] = None,
	showRepliesInLatest: Option[Boolean] = None,
	features: List[String] = List(),
	groupBlog: Option[Boolean] = None)

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list.map(f)

list.map { element =>
	something()
	f(element)
	somethingElse()
}

list.map {
	case Data(d) => f(d)