freckletonj

{-# LANGUAGE StandaloneDeriving #-}
{-# LANGUAGE DeriveTraversable #-}
{-# LANGUAGE DeriveFoldable #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE TemplateHaskell #-}

module BoundRecursionSchemes where

freckletonj

{-# LANGUAGE DataKinds           #-}
{-# LANGUAGE FlexibleContexts    #-}
{-# LANGUAGE FlexibleInstances   #-}
{-# LANGUAGE GADTs               #-}
{-# LANGUAGE RankNTypes          #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies        #-}
{-# LANGUAGE TypeOperators       #-}

module ConstrainedVinylRecords where

freckletonj

{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE TypeOperators #-}

module Sand where

import Data.Aeson

freckletonj

"""
The MIT License (MIT)
Copyright (c) 2016 Josh Freckleton

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WIT

freckletonj

(run* [q]
  (fresh [al finn irv jim
          p1 p2 p3 p4
          y1 y2 y3 y4]
    ;; rule #1 ---------
    ;;  Of the item that sold for $175 and the one that sold for $225,
    ;; one featured Irv Ingram and the other came out in 1983.
    (conde
     ((== irv [:175 (lvar)])
      (membero [:225 :1983] [al finn jim]))

freckletonj

(defn rotate
  "rotate a 2D matrix 90 degrees, it's ok if it's not a perfect square"
  [mat]
  (loop [remaining (map reverse mat)
         result []]
    (if (every? empty? remaining) 
      result
      (recur (map rest remaining)
             (conj result (remove nil? (mapv first remaining)))))))

freckletonj

(def search-term (atom ""))

(defn input [model on-change]
  (let [external-model (atom @model)
        internal-model (atom (or @external-model ""))]
    (fn [model on-change]
      ;; this is taken from recom - http://bit.ly/1SZ1OXn
      (when (not= @external-model @model)
        (.log js/console "changed to " @model)
        (reset! external-model @model)

freckletonj

;; this is very much a gist, and it can be tweaked

;; ;; NOTIFICATIONS ----------
;; if (typeof Notification !== 'undefined') {
;;   alert('Please us a modern version of Chrome, Firefox, Opera or Safari.');
;;   return;
;; }

;; Notification.requestPermission(function (permission) {
;;   if (permission !== 'granted') return;