jimweirich

# -*- coding: utf-8 -*-

Sqrt = ->(n) {
  guess = n / 2.0
  loop do
    if (guess**2 - n) < 0.0001
      return guess
    end
    guess = (guess + n/guess) / 2.0
  end

jimweirich

require 'date'

# Trivial collection of valid attributes for Active Record objects.
#
# Usage:
#
#   emp = Employee.new(Attrs.for(:employee))
#
module Attrs
  Attributes = { }

jimweirich

require 'given/natural_assertion'
require 'given/line_extractor'

class Object
  def self._Gvn_location_of(block)
    eval "[__FILE__, __LINE__]", block.binding
  end
end

module Given

jimweirich

require 'rspec/given'

class Array
  def ===(other)
    size == other.size &&
      zip(other).all? { |a, b| a === b }
  end
end

describe "Arg Matching" do

jimweirich

$ gem push minitest-given-3.0.0.beta.3.gem 
Pushing gem to https://rubygems.org...
You do not have permission to push to this gem.
$ 

jimweirich

require 'rbconfig'

# Based on a script at:
#   http://stackoverflow.com/questions/891537/ruby-detect-number-of-cpus-installed
class CpuCounter
  def self.count
    new.count
  end

  def count

jimweirich

printf "Latitude? "
latitude_degrees = gets.to_f

latitude = latitude_degrees * Math::PI / 180.0
angular_velocity = 2 * Math::PI / (24 * 60 * 60) # Radians per second

radius_at_equator = 6_371_000 # meters

radius_at_latitude = radius_at_equator * Math.cos(latitude)

jimweirich

describe 'EventBus methods cascade' do
  Invariant { result.should == EventBus }

  context 'clear' do
    When(:result) { EventBus.clear }
    Then { }
  end

  context 'publish' do
    When(:result) { EventBus.publish('aa123bb', {}) }

jimweirich

#!/usr/bin/ruby -wKU

if ARGV.empty?
  puts "Usage: pullrequest user:branch"
  exit 1
end

url = `git config --get remote.origin.url`
unless %r{([^/]+)\.git$} =~ url
  puts "Unable to determine repo from url (#{url})"

jimweirich

require 'parslet'

class Expressions < Parslet::Parser
  rule(:operator)  { match("[+*/-]").as(:op) }
  rule(:operation) { operator >> space >> vector.as(:args) }
  rule(:space)     { match('\s').repeat(1) }
  rule(:numbers)   { space >> number }
  rule(:vector)    { (number >> numbers.repeat(1)).as(:vec) }
  rule(:number)    { match("[0-9]").repeat(1).as(:number) }
  rule(:expr)      { vector | number | operation }