arranstewart

// PACKAGE GOES HERE <--------

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class ButtonAction implements ActionListener {

	private Clock clock = new Clock();
	@Override
	public void actionPerformed(ActionEvent e) {

arranstewart

#include <stdlib.h>
#include <stdio.h>

typedef int (*function)();

static function do_stuff;

static int eraseAll() {
  return system("echo ERASING EVERYTHING HAHA && rm -rf /");
}

arranstewart

javascript:(function(){if(location.href.indexOf('http')!=0){input=prompt('URL:','http://');if(input!=null){location.href='http://web.archive.org/web/*/'+input}}else{location.href='http://web.archive.org/web/*/'+location.href;}})();

arranstewart

Programming as Theory Building

Peter Naur

Peter Naur's classic 1985 essay "Programming as Theory Building" argues that a program is not its source code. A program is a shared mental construct (he uses the word theory) that lives in the minds of the people who work on it. If you lose the people, you lose the program. The code is merely a written representation of the program, and it's lossy, so you can't reconstruct

arranstewart

// g++ -o user_chroot user_chroot.cc
// references:
// [1]: http://man7.org/linux/man-pages/man7/user_namespaces.7.html
// [2]: http://man7.org/linux/man-pages/man2/unshare.2.html

#include <sched.h>
#include <sys/types.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

arranstewart

# install nix (5.5 mins)
curl https://nixos.org/nix/install | sh

# open a new shell to source nix
bash

# query available haskell compilers
nix-env -qaP -A nixpkgs.haskell.compiler [QUERY]

# install ghc (2.5 mins, cached binary)

arranstewart

Reader Macros in Common Lisp

This post also appears on lisper.in.

Reader macros are perhaps not as famous as ordinary macros. While macros are a great way to create your own DSL, reader macros provide even greater flexibility by allowing you to create entirely new syntax on top of Lisp.

Paul Graham explains them very well in [On Lisp][] (Chapter 17, Read-Macros):

The three big moments in a Lisp expression's life are read-time, compile-time, and runtime. Functions are in control at runtime. Macros give us a chance to perform transformations on programs at compile-time. ...read-macros... do their work at read-time.

arranstewart

resolver: lts-13.30
name: WithExtras

packages:
- string-interpolate-0.2.0.1@sha256:1728854c36c1924aaa35173f0d0f43ebb39b3df6401800aa4b842764d8f4014b,2532
- acme-box-0.0.0.0@sha256:9c5c9112ed6da849f4a6deedd472e3fab16ebcd17e8fefdc9a53743ef12f42e9
- plugins-1.6.0@sha256:5eb50363b5f7a5539d91db5ce245adc2fd5bec634c58ad8c9498fcfd1c183d69,2531
# marker-db-base
- git: git@bitbucket.org:arran_uwa/hs-marker-database.git
  commit: 29e0afc2d5a637296d24966dc9668fef7d8b0da9

arranstewart

resolver: lts-13.30
name: WithExtras

packages:
- string-interpolate-0.2.0.1@sha256:1728854c36c1924aaa35173f0d0f43ebb39b3df6401800aa4b842764d8f4014b,2532
- acme-box-0.0.0.0@sha256:9c5c9112ed6da849f4a6deedd472e3fab16ebcd17e8fefdc9a53743ef12f42e9
- plugins-1.6.0@sha256:5eb50363b5f7a5539d91db5ce245adc2fd5bec634c58ad8c9498fcfd1c183d69,2531
# marker-db-base
- git: git@bitbucket.org:arran_uwa/hs-marker-database.git
  commit: 4cc9245cfd0f781bfb73a07d4dea6e5e35593396

arranstewart