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@fogus
fogus / dcs.rkt
Created Jul 26, 2019 — forked from rain-1/dcs.rkt
Dotted Canonical S-expressions - DCSexps
View dcs.rkt
#lang racket
;; printing s-exps as DCS and TDCS, plus examples of what DCS and TDCS look like
(define (dcs l)
(cond ((pair? l)
(begin
(display ".")
(dcs (car l))
(dcs (cdr l))))
@fogus
fogus / notes.md
Created Jul 8, 2019 — forked from frenchy64/notes.md
Notes on JavaScript prototypes
View notes.md

Why Objects were successful

https://www.cs.cmu.edu/~charlie/courses/15-214/2014-fall/slides/25-history-oo.pdf

  • essense of objects is (dynamic) dispatch
  • dispatch provides interoperability
  • first-class interoperability is critical to frameworks and ecosystems
  • frameworks and ecosystems are economically critical to the software industry
  • likely a significant factor in objects' success
  • Also talks about early mistakes in Simula

Why objects are inevitable

View maze-generation
(require '[clojure.string :as s])
;; Maze GENERATION
(defn north-of [[row col]] [(dec row) col])
(defn south-of [[row col]] [(inc row) col])
(defn west-of [[row col]] [row (dec col)])
(defn east-of [[row col]] [row (inc col)])
(defn neighbours [rows cols cell]
View mccarthy-eval.lisp
; A MICRO-MANUAL FOR LISP - NOT THE WHOLE TRUTH, 1978
; John McCarthy, Artificial Intelligence Laboratory, Stanford University
; https://www.ee.ryerson.ca/~elf/pub/misc/micromanualLISP.pdf
; https://github.com/jaseemabid/micromanual
; for CL : Rainer Joswig, joswig@lisp.de
; this version runs in a Common Lisp
@fogus
fogus / magic-the-gathering-card-spec.clj
Created Jul 13, 2018 — forked from robert-stuttaford/magic-the-gathering-card-spec.clj
Noodling around with core.spec, modelling M:tG card data
View magic-the-gathering-card-spec.clj
(ns magic-the-gathering-card-spec
(:require [clojure.spec :as s]
[clojure.spec.gen :as gen]))
(s/def ::pos-int (s/and int? (complement neg?)))
(s/def ::set string?)
(s/def ::set-number ::pos-int)
(s/def ::artist string?)
View MOP-COLA.adoc
fun send(rcv, msg, args) {
  cls = rcv.isa
  if (cls.isa == STD_CLS)
    method = builtin_lookup(rcv, msg)
  else
    method = send(cls, "lookup", msg)
  method(rcv, args)
}
View units.clj
(ns party.units
(:refer-clojure :exclude [+ - * /])
(:require [clojure.algo.generic.arithmetic :as ari :use [+ - * /]]))
(defrecord Measurement [factor units]
clojure.lang.IFn
(invoke [a b] (* a b)))
(defn ^:private short-name [sym]
(if (= (namespace sym) (namespace `foo))
@fogus
fogus / service.clj
Last active Dec 1, 2017 — forked from mtnygard/service.clj
Using the not-found-interceptor as a catchall
View service.clj
(ns support.service
(:require [io.pedestal.http :as http]
[io.pedestal.http.route :as route]))
(defn about-page
[request]
{:status 200 :body (format "Clojure %s - served from %s"
(clojure-version)
(route/url-for ::about-page))})
View rich-already-answered-that.md

Rich Already Answered That!

A list of commonly asked questions, design decisions, reasons why Clojure is the way it is as they were answered directly by Rich (even when from many years ago, those answers are pretty much valid today!). Feel free to point friends and colleagues here next time they ask (again). Answers are pasted verbatim (I've made small adjustments for readibility, but never changed a sentence) from mailing lists, articles, chats. The link points back at them.

Why no pattern matching?

If you are talking about the aspect of pattern matching that acts as a conditional based upon structure, I'm not a big fan. I feel about them the way I do about switch statements - they're brittle and

View j.c
typedef char C;
typedef long I;
typedef struct a {
I t, r, d[3], p[2];
} *A;
#define P printf
#define R return
#define V1(f) A f(w)A w;
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