October 2011 - Plain Ol' Ruby, Part 1

Barrett Clark begins a mini series on using Ruby without external frameworks. This session focuses on Test::Unit and touches on the Ruby load path, __FILE__, and single file execution.

Source available at: https://github.com/barrettclark/DallasRubyPOR

Barrett can be found on Twitter at http://twitter.com/barrettclark

Transcript

1. RUBY CORE ETCETERA Friday, October 7, 2011
2. HOW TO MAKE AN OSM COMMAND-LINE APP Friday, October 7, 2011
3. WHAT’S SO GREAT ABOUT ME? I WORK AT GEOFORCE BEEN DOING RUBY FOR 4ISH YEARS I HAVE A YELLOW LAB GITHUB: BARRETTCLARK TWITTERS: @BARRETTCLARK Friday, October 7, 2011
4. CREATE A CLASS... ...AND TEST IT Friday, October 7, 2011
5. class Example1 attr_reader :text def initialize @text = 'Oh Hai' end end require 'test/unit' require File.expand_path(File.dirname(__FILE__), 'example1') class Example1Test < Test::Unit::TestCase def test_initialize example = Example1.new assert_equal 'Oh Hai', example.text end end 1 tests, 1 assertions, 0 failures, 0 errors, 0 skips Friday, October 7, 2011
6. THAT’S GREAT. SO WHAT’S THE BIG DEAL? Friday, October 7, 2011
7. SOME TRICKS INCLUDE VS COMMAND LINE SHEBANG VS EXPLICITLY EXECUTE VIA RUBY __FILE__ == $0 “(IRB)” == “IRB” “EXAMPLE1.RB” == “EXAMPLE1.RB” Friday, October 7, 2011
8. require 'csv' require File.join(File.dirname(__FILE__), 'zipcode') class FileReader def self.read_zipcodes filename = File.join(File.dirname(__FILE__), 'zipcode.csv') options = { :headers => true } CSV.foreach(filename, options) do |row| next if row.size != row.headers.size attributes = Hash.new row.headers.each { |field| attributes[field.to_sym] = row[field] } zipcode = ZipCode.new(attributes) end end end # Run from the command line if __FILE__ == $0 FileReader.read_zipcodes end Friday, October 7, 2011
9. ZIPCODE CLASS Friday, October 7, 2011
10. GIT://GITHUB.COM/ BARRETTCLARK/ DALLASRUBYPOR.GIT Friday, October 7, 2011