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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.

chronodm

package format

import model._
import spray.json._
import org.joda.time.DateTime
import org.joda.time.format.{ISODateTimeFormat, DateTimeFormatter}

/**
 * @version $Id$ $Rev: 223159 $ $Date: 2013-11-27 15:12:03 -0800 (Wed, 27 Nov 2013) $
 */

drexin

import java.io.File
import language.experimental.macros
import scala.reflect.macros.Context

object Macros {

  def LINE: Int = macro lineImpl

  def lineImpl(c: Context): c.Expr[Int] = {
    import c.universe._