christianromney

/* This is my interface, my API, my contract. */
interface IReservation {
  IList<IGuest> getGuests();
  Duration getLength();
  Amount getBalance();
  Amount getTotal();
  bool cancel();
  // By the way pay() could have been in IPaymentMethod as well but you know what?
  // I called first and so I win!
  // Or both of us would end up implementing pay() in which case we would smartly delegate 

christianromney

/* 
 Hi, I'm Reservation. 
  I dont need an interface because I am a carrier of data.
  Like a good carrier, I can be instantiated in any layer and used
  in any other layer.

  [CR] Nomenclature! "Data carriers" are *not* domain models. They are 
  DataTransferObjects (DTOs). What I call domain model, you seem to call
  Service Object, whereas what I mean by "Service Object" is something 
  altogether different...so maybe this is part of the reason we're not

christianromney

; Standard k nearest neighbors classifier 
; Does not handle 
;   > 2 classes
;   even values of k
;   any bad input, really
;
; David Andrzejewski (andrzeje@cs.wisc.edu)
;
; Command-line arguments
; 0 training data filename 

christianromney

(ns simple-csp.core)

(def arcs [
  #{:sa :wa}
  #{:sa :nt} 
  #{:sa :q}
  #{:sa :nsw}
  #{:sa :v}
  #{:wa :nt}
  #{:nt :q}

christianromney

(ns simple-csp.core
  ( :refer-clojure :exclude [==])
  (:use clojure.core.logic))

(defne arco [x y]
  ([:sa :wa])
  ([:sa :nt])
  ([:sa :q])
  ([:sa :nsw])
  ([:sa :v])

christianromney

(ns rubric.core)

(defn average
  "Averages a set of scores"
  [& scores]
  (/ (apply + scores) (count scores)))

(defn- sum-of
  "Sum the collection after applying the given function"
   [f coll]

christianromney

/* 
 Hi, I'm Reservation. 
  I dont need an interface because I am a carrier of data.
  Like a good carrier, I can be instantiated in any layer and used
  in any other layer.

  If you need to do stuff with me you should know to instantiate the correct
  service and pass me to it.
  Makes sense too since I you might need other classes to instantiate service

christianromney

(defn filter-col [a]
  (filter (juxt #(< 30 %) odd?)  a))

(defn report-results [col]
  (println col)
  col)

(-> (range 100)
    filter-col
    report-results)

christianromney

Clojure does Objects Better

A hopefully short and concise explanation as to how Clojure deals with Objects. If you already write Clojure, this isn't for you.

You know what an Interface is if you write/read Java or PHP 5+. In Clojure it might be called defprotocol.

user> (defprotocol IABC
        (also-oo [this])
        (another-fn [this x]))

IABC

christianromney

Recent improvements to the ClojureScript compiler have greatly simplified setting up development versus production outputs.

This example uses Figwheel as something that you want to exclude for production, but the pattern is general.

With this simple setup you only need one html file/view and it will work for developement and production.