kerryb

# If you want to check that something's true or false in the normal ruby sense
# (ie anything other than false or nil is true), you can use double negation
# to force it into an actual boolean (eg !!foo.should be_true). To keep this
# ugliness out of your tests, stick these matchers in your spec helper:

def be_truish
  return simple_matcher do |obj, matcher|
    matcher.description = 'be true(ish)'
    matcher.failure_message = "Expected #{obj.inspect} to be true(ish)"
    matcher.negative_failure_message = "Expected #{obj.inspect} not to be true(ish)"

kerryb

#!/usr/bin/env ruby

require 'rubygems'
require 'spec'

class Foo
  def self.foo
    Bar.bar
  rescue StandardError
  end

kerryb

#!/usr/bin/ruby
#-*-ruby-*-
# A script to run ctags on all .rb files in a project. Can be run on
# the current dir, called from a git callback, or install itself as a
# git post-merge and post-commit callback.

CTAGS = '/usr/local/bin/ctags'
HOOKS = %w{ post-merge post-commit post-checkout }
HOOKS_DIR = '.git/hooks'

kerryb

namespace :code do
  task :trailing_spaces do
   grep "app", "spec"
  end

  def grep *file_patterns
    files_found = ""
    file_patterns.each do |file_pattern|
      files_found << `grep -r -E '^.*[[:space:]]+$' --include '*.rb' #{file_pattern}`
    end

kerryb

# I originally refactored this method to a recursive solution, but I wonder whether
# that's really necessary. Is the alternative approach using inject easier to
# understand?


# Original method, with external iterator:

# Build breadcrumb list from an array of nested model instances, starting with the parent
# and ending with the lowest level child. Each breadcrumb needs to be created using a
# sub-array containing itself and its parents.

kerryb

$ rake spec
(in /Users/kerry/tmp/foo)
/Users/kerry/ruby/bin/ruby -S bundle exec rspec ./spec/models/foo_spec.rb
F

Failures:

  1) Foo shows the line that failed
     Failure/Error: false.should be_true
       expected false to be true

kerryb

#/bin/bash
#
# Number guessing game.
# A simple demo of bash capabilities
#
# [email protected]

readonly MaxGuesses=6
readonly Timeout=10

kerryb

module DynamicSetup
  def dynamic_setup_complete?
    @dynamic_setup_complete
  end

  def method_missing name, *args, &block
    if dynamic_setup_complete?
      super
    else
      perform_dynamic_setup

kerryb

data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
chunk_size = 3
chunked_averages = (0...data.length).zip(data).group_by{|a| a.first / chunk_size}.values.map{|a| a.map(&:last).reduce(&:+) / a.size}

kerryb

$ gem -v
<internal:lib/rubygems/custom_require>:32:in `rescue in require': undefined method `try_activate' for Gem:Module (NoMethodError)
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from /usr/local/lib/ruby/site_ruby/1.9.1/rubygems.rb:32:in `<top (required)>'
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from /usr/local/bin/gem:8:in `<main>'


$ ruby -d -rubygems -e 'puts 42'