Mike Etlinger Mk-Etlinger

Implement an Expression Evaluator Our goal is to write a program that is capable of evaluating simple mathematical expressions. An example expression could look like:

+ 1 2 This expression can be read as 1 + 2 and evaluates to 3. We've placed the operator (+) first in our syntax to simplify some things down the road. The + indicates that this is an operator expression, and is evaluated by summing the two following tokens, which in this case are both numbers.

The general rules are:

Expressions can be numbers or operator expressions (4 is an expression and so is - 3 1) Numbers evaluate to themselves (4 is 4)

Proxy cache passes GET instead of HEAD to upstream... so we have a 403.

This version include these fixes.

Remove $request_method from $string_to_sign and pass static string "GET" instead
Remove proxy_buffering directive for allowing the nginx cache

	class User
	attr_accessor :name, :user_name, :age, :location, :bio

	def initialize(attributes)
	attributes.each {\|key, value\| self.send(("#{key}="), value)}
	end
	end

	class ApplicationController < ActionController::Base
	protect_from_forgery with: :exception

	def after_sign_in_path_for(resource)
	request.env['omniauth.origin'] \|\| dashboard_path
	end

	def index
	render "landing/index"
	end

	class ApplicationController < ActionController::API
	before_action :authenticate_user

	def sorcery
	controller_name = params['controller']
	controller_name.chop!
	model_name = controller_name.capitalize
	instance_variable_set('@' + controller_name, Object.const_get( model_name ).find_by(id: params[:id]))
	end
	end

	class ApplicationController < ActionController::API

	def metaprogram_controller_instance_variable
	model_name = params['controller'].singularize
	Model = Object.const_get(model_name.capitalize)
	value_to_set = Model.find_by(id: params[:id])
	instance_variable_set('@' + model_name, value_to_set)
	end

	end

	def self.parse(string)
	sum = 0
	char_array = string.split
	char_array.each_with_index do \|char, i\|
	sum += char.to_i
	next unless char == '-' && char_array[i + 2]
	if char_array[i + 2].to_i == 0
	char_array[i + 1] = char + char_array[i + 1]
	else
	char_array[i + 2] = char + char_array[i + 2]

	class ExpressionEvaluator
	def self.parse(string)
	complex_exps = string.scan(/-\s\d+\s\d+/)
	simple_exps = string.gsub(/-\s\d+\s\d+/, '')
	complex_sum(complex_exps) + simple_sum(simple_exps)
	end
	end

	add_action('init', function(){

	session_set_cookie_params( 0 );

	if(!session_id())
	session_start();
	}, 1);