Joe Corcoran joecorcoran

Baked sweet potatoes

I hereby claim:

To claim this, I am signing this object:

	# Define the method #each (without using Enumerable#each) so that
	# the following prints three lines:

	# def each ...
	# ...
	# end

	rgb = ['red', 'blue', 'green']

	each(rgb) do \|c\|

	# Use all examples to output the string "Hello, Sven!"

	def hello_0(&block)
	puts yield
	end

	def hello_1(&block)
	puts block.call
	end

	# Simple user class
	# We're pretending this is an ActiveRecord::Base model
	class User
	attr_reader :name

	def initialize(name)
	@name = name
	end
	end

	# Use the method #call on each of these
	# examples, to return the value `:hi`

	class One
	def call
	:hi
	end
	end

	class Two

	# Code challenge!
	#
	# 1. Save the contents of this gist in a
	# file named classes.rb
	#
	# 2. Define the initialize method for class B
	# so that, when you run `ruby classes.rb`,
	# the output in the terminal is `true`
	#
	# (Don't define any other methods or

	# A weird quirk of keyword args in Ruby that just tripped me up.
	# An object passed as the second argument here will be used
	# differently depending on its type.
	def test(a, b = [], **c)
	[a, b, c]
	end

	# As expected, the default values work.
	test(:one) # => [:one, [], {}]
	test(:one, :two) # => [:one, :two, {}]

	# In your terminal (Mac OS X):

	createuser -s pguser
	psql postgres

	# In your terminal (Ubuntu):

	sudo -u postgres createuser -s pguser
	sudo -u postgres psql