rm-hull

#!/usr/bin/perl

# This script is made to show graphs with git commit time made on workweek vs weekend
#
# The desription of this script and results of its usage is avaliable at:
# https://ivan.bessarabov.com/blog/famous-programmers-work-time-part-2-workweek-vs-weekend
#
# usage:
#
#   git log --author="Sebastian Riedel" --format="%H %ai" | perl script.pl

rm-hull

Why Lisp macros are cool, a Perl perspective

Original text from http://lists.warhead.org.uk/pipermail/iwe/2005-July/000130.html

Content

From: Mark Jason Dominus <[email protected]> 
Date: Jul 28, 2005 11:16 PM
Subject: Re: HOP -vs- SICP

To: [email protected]

rm-hull

import struct
import spidev
import sys
import time
import random
import RPi.GPIO as gpio

ascii = [
    [ 0x55, 0x00, 0x55, 0x00, 0x55 ],
    [ 0x55, 0x00, 0x55, 0x00, 0x55 ],

rm-hull

What is the appeal of dynamically-typed languages?

Kris Nuttycombe asks:

I genuinely wish I understood the appeal of unityped languages better. Can someone who really knows both well-typed and unityped explain?

I think the terms well-typed and unityped are a bit of question-begging here (you might as well say good-typed versus bad-typed), so instead I will say statically-typed and dynamically-typed.

I'm going to approach this article using Scala to stand-in for static typing and Python for dynamic typing. I feel like I am credibly proficient both languages: I don't currently write a lot of Python, but I still have affection for the language, and have probably written hundreds of thousands of lines of Python code over the years.

rm-hull

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called (Functional) Reactive Programming (FRP).

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

rm-hull

Parsing CSS file with monadic parser in Clojure

Inspired by "Parsing CSS with Parsec".

Just quick notes and code that you can play with in REPL.

By @kachayev

0. Intro

rm-hull

(ns async-test.sinewave.core
  (:require [cljs.core.async :refer [<! >! chan timeout]])
  (:require-macros
    [cljs.core.async.macros :as m :refer [go]]))


(defn sin-vals [offset]
  (map #(Math/sin %) (iterate (partial + 0.1) offset)))

(let [events (chan)]

rm-hull

(ns three.demo
  (:require [THREE :as THREE]))

(def camera 
  (THREE/PerspectiveCamera. 
    75 
    (/ 800 600) 
    1 
    10000))

rm-hull

(ns sudoku
  ;(:refer-clojure :exclude [==])
  (:require-macros [cljs.core.logic.macros :as m])
  (:use [cljs.core.logic :only [everyg infd distinctfd]]))

(defn get-square [rows x y]
  (for [x (range x (+ x 3))
        y (range y (+ y 3))]
    (get-in rows [x y])))

rm-hull

(defmacro def-curry-fn [name args & body]
  {:pre [(not-any? #{'&} args)]}
  (if (empty? args)
    `(defn ~name ~args ~@body)
    (let [rec-funcs (reduce (fn [l v]
                              `(letfn [(helper#
                                         ([] helper#)
                                         ([x#] (let [~v x#] ~l))
                                         ([x# & rest#] (let [~v x#]
                                                         (apply (helper# x#) rest#))))]