Brian W Bush bwbush

vimdiff cheat sheet

This is a vimdiff cheat sheet as a git mergetool.

Commands

]c - go to next difference

The Indexed State Monad in Haskell, Scala, and C#

Have you ever had to write code that made a complex series of succesive modifications to a single piece of mutable state? (Almost certainly yes.)

Did you ever wish you could make the compiler tell you if a particular operation on the state was illegal at a given point in the modifications? (If you're a fan of static typing, probably yes.)

If that's the case, the indexed state monad can help!

Motivation

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

	A Whirlwind Tour of Combinatorial Games in Haskell
	==================================================

	Combinatorial games are an interesting class of games where two
	players take turns to make a move, changing the game from one position
	to another. In these games, both players have perfect information
	about the state of the game and there is no element of chance. In
	'normal play', the winner is declared when the other player is unable
	to move. A lot of famous strategy games can be analysed as
	combinatorial games: chess, go, tic-tac-toe.

	#!/bin/bash

	if [ $# -ne 2 ]; then
	echo "Usage: $0 file partSizeInMb";
	exit 0;
	fi

	file=$1

	if [ ! -f "$file" ]; then

	/*
	* I add this to html files generated with pandoc.
	*/

	html {
	font-size: 100%;
	overflow-y: scroll;
	-webkit-text-size-adjust: 100%;
	-ms-text-size-adjust: 100%;
	}

	// Credit to damien_oconnell from http://forum.unity3d.com/threads/39513-Click-drag-camera-movement
	// for using the mouse displacement for calculating the amount of camera movement and panning code.

	using UnityEngine;
	using System.Collections;

	public class MoveCamera : MonoBehaviour
	{
	//
	// VARIABLES

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

	## Acer
	#SUBSYSTEM=="usb", ATTR{idVendor}=="0502", MODE="0600", OWNER="<username>"

	## ASUS
	#SUBSYSTEM=="usb", ATTR{idVendor}=="0b05", MODE="0600", OWNER="<username>"

	## Dell
	#SUBSYSTEM=="usb", ATTR{idVendor}=="413c", MODE="0600", OWNER="<username>"

	## Foxconn

	main :: IO ()
	main = scotty 3000 app

	app :: ScottyM ()
	app = do
	rcon <- liftIO $ R.connect R.defaultConnectInfo {R.connectPort = R.UnixSocket "redis.sock"}

	get "/favicon.ico" $ html "ಠ_ಠ"

	get "/:method" $ do