chadmiko

# Ruby opposite of array intersection... or maybe the method is missing from my brain bc not enough coffee
# http://twitter.com/soawesomeman/status/8035087261

def awesome(ar_1, ar_2)
  (ar_1 + ar_2) - (ar_1 & ar_2) 
end

awesome([1,2,3,4], [3,4,5,6]) # => [1, 2, 5, 6]

chadmiko

git branch --merged | grep -v "\*" | grep -v master | grep -v dev | xargs -n 1 git branch -d

chadmiko

require 'bundler/setup'

# From: https://gist.github.com/drogus/6087979 
require 'active_record'

include ActiveRecord::Tasks

db_dir = File.expand_path('../db', __FILE__)
config_dir = File.expand_path('../config', __FILE__)

chadmiko

1. Download US Tigerline ZCTA shapefiles (I pulled entire US, 2013 version at time of this gist)

2. Ensure GDAL is installed w/ postgresql flags
  // see http://gis.stackexchange.com/questions/33346/how-can-i-update-ogr2ogr-to-include-the-postgresql-driver
  brew uninstall gdal (if installed)
  brew install gdal --with-postgresql 
  
3. Convert and import ogr2ogr (my db name is gis_data)
  // -nlt MULTIPOLYGON needed b/c it will try to import as regular POLYGON and fail
  // NOTE: this will fail if table already exists w/same name (use --append or delete the table to start over)

chadmiko

--colour
-I app

chadmiko

Get Mountain Lion and Homebrew to Be Happy

1) Install XCode 4.4 into /Applications

Get it from the App Store.

2) Install Command Line Tools

In XCode's Preferences > Downloads you can install command line tools.

chadmiko

For those of you who get this error after upgrading to mountain lion:


Installing rmagick (2.13.1) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

	/Users/user/.rvm/rubies/ruby-1.9.3-rc1/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
extconf.rb:128: Use RbConfig instead of obsolete and deprecated Config.
checking for /usr/bin/gcc-4.2... no