Dr. Kat katychuang

To install nix on OSX10.10, I first followed this [nixos.org wiki guide][1] shared by @boothead, and then found [this guide][3] on setting up a haskell environment with nix. See config.nix file below. I made one change from the tutorial, which is to change ghc783 to ghc784 (line 13).

After creating the file ~/.nixpkgs/config.nix, I skipped the ghc76 stuff and went straight to nix-env -i env-ghc78. It took a bit more than 2 hrs on an 8gb ram MBA for everything to build and link. The end result says

building path(s) ‘/nix/store/6rcj8chl2vim4mry5k7w8gs7nxifxixc-user-environment’
created 51 symlinks in user environment

Then finally: load-env-ghc78 loaded up a shell from which I could ghci

I'm new to Haskell and have been asked to document my experience of learning this language, as it'd be valuable to the community. I will be using a research method from Anthropology, called Ethnography. The outcome of this ethnography is field notes.

What are field notes?

Field notes refer to transcribed notes or the written account derived from data collected during observations and interviews. There are many styles of field notes, but all field notes generally consist of two parts: descriptive in which the observer attempts to capture a word-picture of the setting, actions and conversations; and reflective in which the observer records thoughts, ideas, questions and concerns based on the observations and interviews.

To make best use of time (and not make this a full time gig), I'm asking the Haskell Community for ideas on where I should focus my attention, or "case studies". Feel free to comment below or tweet me [@katychuang](http://twitter.com/katychua

Data Mascara: NYC Python's data themed office hours, Monday evenings 7-9pm

###Speakers:

Chatting about basic skills is useful, or even best practices would be really interesting everyone attending. You can talk about a project you've worked on or pick a theme from the list of themes.

###Volunteers:

It doesn't matter what level of Python you have, we welcome everyone's help. From setting up and cleaning up for events, to finding speakers and interesting topics - more folks help things go smoother. If you would like to share your expertise in Python, stop by to help answer questions!

First remove any GHC, especially if you installed the platform edition. There is a script (https://gist.github.com/katychuang/9939239#file-removehaskellplatform-sh), which you should run in your terminal.

Install & Setup

GHC

Download GHC 7.8.3 binary ~~Download GHC 7.6.3 binary~~

The first Hac NYC, a Haskell hackathon/get-together will be held April 4-6 in New York City.

You must officially register with [the registration form][1] to attend.

Official information can be found on the [wiki page][2].

Were you trigger happy with the installation of OSX Mavericks? Here are quick steps to bring your haskell back. Tips referenced from cartazio:

Make sure you have xcode 5 cli tools for OSX Mavericks installed. Go to that link, download and install.
Get the proper gcc version. Open up your terminal and type brew install apple-gcc42 and then followed by brew link apple-gcc42. Test things out with a fresh new terminal window and type which gcc-4.2. Note that you may have to update brew update. (you may have to uninstall or brew update, or brew link apple-gcc42)

$ brew install apple-gcc42
==> Downloading http://r.research.att.com/tools/gcc-42-5666.3-darwin11.pkg

	public class Circle {

	private double radius;

	public Circle(double radius) {
	this.radius = radius;
	}

	public double getRadius() {
	return radius;

	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
	<!-- Generated with d3-generator.com -->
	<html>
	<head>
	<title>Bar Chart</title>
	<meta http-equiv="X-UA-Compatible" content="IE=9">
	</head>
	<body>
	<div id="chart"></div>
	<script src="http://d3js.org/d3.v2.min.js"></script>

	<!DOCTYPE html>
	<meta charset="utf-8">

	<style>
	#boroughs {
	stroke: grey;
	stroke-width: 2px;
	fill: #C4CAC5;
	}
	</style>

	#!/usr/bin/env sh

	# first check to see if mongo service is running. you can't delete any files until the service stops so perform a quick check.
	launchctl list \| grep mongo
	# NOTE: the pipe \| symbol means the commands on the right performs on the output from the left
	# grep is a string search utility. `grep mongo` means search for the substring mongo

	# use the unload command to end the mongo service. this is required to 'unlock' before removing the service.
	# first look for the file to delete
	MONGO_SERVICE_FILE=$(ls ~/Library/LaunchAgents/mongodb)