Rehno Lindeque rehno-lindeque

NOTE: a more up-to-date version of this can be found on my blog

nix-shell and Shebang Lines

A few days ago, version 1.9 of the Nix package manager was released. From the release notes:

nix-shell can now be used as a #!-interpreter. This allows you to write scripts that dynamically fetch their own dependencies.

autopy - simple, cross-platform GUI automation toolkit. MIT - https://github.com/msanders/autopy/

Create a EC2 instance using Ubuntu 14.04.
In Secure Group Inbound Rules, add a SSH Rule(TCP, Port 22, 0.0.0.0/0) and a Custom TCP Rule(TCP, Port 1723, 0.0.0.0/0).
Optional: Associate a Elastic IP with the instance.
SSH into the instance.
sudo apt-get install pptpd.
sudo vim /etc/pptpd.conf. Uncomment localip 192.168.0.1 and remoteip 192.168.0.234-238,192.168.0.245.
sudo vim /etc/ppp/pptpd-options. Uncomment ms-dns and ms-wins. Change the IP to Google's DNS like this:

Storing some notes on getting WiFi access points working on BeagleBone Black with the latest Debian Jessie images using the 3.8 kernel.

Articles

Devices expected to work

	-- When your code grows too big for a line:

	separateParens = foldr (\ head tail -> if head == '(' then head : ' ' : tail else if head == ')' then ' ' : head : tail else head : tail) []

	-- Your natural instinct is to add new lines and comments:

	separateParens =
	foldr (\ head tail ->
	if head == '('
	then head : ' ' : tail -- inserts space after left parens

	{-# LANGUAGE DeriveFunctor #-}
	{-# LANGUAGE MultiParamTypeClasses #-}
	{-

	Explores Free Monads (DSLs) and Cofree Comonads (interpreters) and
	their relationship.

	Most of the code in this file comes from (1) below. Only minor
	modifications are made - semantics are preserved.

	--------------------------
	-- CORE LIBRARY IMPORTS --
	--------------------------
	import Task exposing (Task, ThreadID, andThen, sequence, succeed, spawn)
	import Json.Decode exposing (Decoder, list, int, string, (:=), map, object2)
	import Signal exposing (Signal, Mailbox, mailbox, send)
	import List

	---------------------------------
	-- THIRD PARTY LIBRARY IMPORTS --

	#!/usr/bin/env python

	from collections import Counter
	import csv

	all_tags = []
	lines = []
	with open('passpack.csv') as passwords_handle:
	passwords = csv.reader(passwords_handle, delimiter=',',
	quotechar='"', quoting=csv.QUOTE_MINIMAL)

	{-# LANGUAGE FlexibleInstances #-}
	-- \| Monoids with holes. The 'HoleyMonoid' allows building monoidal values of which certain components are to be filled in later. For example:
	--
	-- > > let holey = now "x = "
	-- > . later show
	-- > . now ", y = "
	-- > . later show
	-- > > run holey 3 5
	-- > "x = 3, y = 5"
	--

	#!/bin/bash -e

	name=$(sed -n -e 's/^[nN]ame:\s\+\(.\+\)/\1/p' *.cabal)
	old_ver=$(sed -n -e 's/^[vV]ersion:\s\+\(.\+\)/\1/p' *.cabal)
	has_docs=1
	grep -i '^Library' *.cabal \|\| has_docs=0

	echo "Package name: $name"
	echo "Current version: $old_ver"
	echo "Has documentation: $has_docs"