ghoseb

;;
;; NS CHEATSHEET
;;
;; * :require makes functions available with a namespace prefix
;;  and optionally can refer functions to the current ns.
;;
;; * :import refers Java classes to the current namespace.
;;
;; * :refer-clojure affects availability of built-in (clojure.core)
;;   functions.

michiakig

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Ant sim ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;   Copyright (c) Rich Hickey. All rights reserved.
;   The use and distribution terms for this software are covered by the
;   Common Public License 1.0 (http://opensource.org/licenses/cpl.php)
;   which can be found in the file CPL.TXT at the root of this distribution.
;   By using this software in any fashion, you are agreeing to be bound by
;   the terms of this license.
;   You must not remove this notice, or any other, from this software.

;dimensions of square world

CristinaSolana

1. Clone your fork:

git clone git@github.com:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

leobm

(defn contextual-eval [ctx expr]
    (eval                                           
        `(let [~@(mapcat (fn [[k v]] [k `'~v]) ctx)] 
             ~expr)))
(defmacro local-context []
    (let [symbols (keys &env)]
        (zipmap (map (fn [sym] `(quote ~sym)) symbols) symbols)))
(defn readr [prompt exit-code]
    (let [input (clojure.main/repl-read prompt exit-code)]
        (if (= input ::tl)

Jezza

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.Random;

/**
 * General fuckery.
 *
 * @author jezza
 * @date Oct 1, 2015
 */

umayr

## Pre-requisite: You have to know your last commit message from your deleted branch.
git reflog
# Search for message in the list
# a901eda HEAD@{18}: commit: <last commit message>

# Now you have two options, either checkout revision or HEAD
git checkout a901eda 
# Or
git checkout HEAD@{18}

forax

import static java.lang.invoke.MethodHandles.lookup;
import static java.lang.invoke.MethodType.methodType;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodHandles.Lookup;
import java.lang.invoke.MethodType;
import java.lang.invoke.MutableCallSite;
import java.util.Arrays;

reborg

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.

How to use:

• The link in the table of content jumps at the copy of the answer on this page.
• The link on the answer itself points back at the original post.

Table of Content

angusiguess

Inspiration

Racing the Beam: The Atari Video Computer System

This is the book that got me excited about emulation and got me thinking about some of these computers in general.

Koji Kondo's Super Mario Bros. Soundtrack

I read this around the same time. It talks at length about the audio capabilities of the NES, which I haven't touched on here but are interesting and influential!

yogthos

Introductory resources

• High level overview https://yogthos.github.io/ClojureDistilled.html
• An Animated Introduction to Clojure https://markm208.github.io/cljbook/
• Interactive tutorial in a browser https://tryclojure.org/
• Interactive exercises http://clojurescriptkoans.com/
• Clerk notebooks with introductory examples https://github.clerk.garden/anthonygalea/notes-on-clojure
• More interactive exercises https://4clojure.oxal.org/
• Lambda Island tutorials https://lambdaisland.com/
• Functional Programming with Clojure resources https://practicalli.github.io/