Meh. Obviously we can't cache variables that need to be redefined eve…

…ry single request.

Gemfile.lock

@@ -0,0 +1,29 @@
+GEM
+  remote: http://rubygems.org/
+  specs:
+    activesupport (3.2.2)
+      i18n (~> 0.6)
+      multi_json (~> 1.0)
+    daemons (1.1.8)
+    eventmachine (0.12.10)
+    i18n (0.6.0)
+    multi_json (1.1.0)
+    rack (1.4.1)
+    rack-contrib (1.1.0)
+      rack (>= 0.9.1)
+    rack-mount (0.8.3)
+      rack (>= 1.0.0)
+    thin (1.3.1)
+      daemons (>= 1.0.9)
+      eventmachine (>= 0.12.6)
+      rack (>= 1.0.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activesupport
+  rack
+  rack-contrib
+  rack-mount
+  thin

fu.rb

@@ -5,28 +5,23 @@
 
 class FU
   class App
-    attr_reader :env
+    attr_reader :env, :params, :request
     attr_accessor :callback
 
     def initialize(callback)
       @callback = callback
     end
 
-    def request
-      @request ||= Rack::Request.new(env)
-    end
-
-    def params
-      @params ||= begin
+    def call(env)
+      @env = env
+      @request = Rack::Request.new(env)
+      @params = begin
         params = request.params || {}
         params.merge!(request.env["rack.request.form_hash"] || {})
         params.merge!(request.env["rack.routing_args"] || {})
         ActiveSupport::HashWithIndifferentAccess.new(params)
       end
-    end
 
-    def call(env)
-      @env = env
       instance_eval(&callback)
     end
   end
@@ -104,21 +99,21 @@ def compile_path(path)
 app = FU.app do
   use Rack::Runtime
 
-  get "/" do
-    name = params.fetch(:name, "Rackers")
-
+  get "/:name" do
     [
       200,
       {"Content-Type" => "text/html"},
-      ["Hello #{name}!"]
+      ["Hello #{params[:name]}!"]
     ]
   end
 
-  get "/:name" do
+  get "/" do
+    name = params.fetch(:name, "Rackers")
+
     [
       200,
       {"Content-Type" => "text/html"},
-      ["Hello #{params[:name]}!"]
+      ["Hello #{name}!"]
     ]
   end