From 4794bad93af02030fa3710ba80c3b0783ce26611 Mon Sep 17 00:00:00 2001
From: Leon Rische <hello@l3kn.de>
Date: Thu, 3 Mar 2016 15:43:19 +0100
Subject: [PATCH] code for chapter 5 in ruby

---
 05_hash_tables/ruby/01_price_of_groceries.rb |  8 ++++++++
 05_hash_tables/ruby/02_check_voter.rb        | 16 ++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 05_hash_tables/ruby/01_price_of_groceries.rb
 create mode 100644 05_hash_tables/ruby/02_check_voter.rb

diff --git a/05_hash_tables/ruby/01_price_of_groceries.rb b/05_hash_tables/ruby/01_price_of_groceries.rb
new file mode 100644
index 0000000..9763b25
--- /dev/null
+++ b/05_hash_tables/ruby/01_price_of_groceries.rb
@@ -0,0 +1,8 @@
+# {} is the same as Hash.new
+book = {}
+# an apple costs 67 cents
+book["apple"] = 0.67
+# milk costs $1.49
+book["milk"] = 1.49
+book["avocado"] = 1.49
+puts book
diff --git a/05_hash_tables/ruby/02_check_voter.rb b/05_hash_tables/ruby/02_check_voter.rb
new file mode 100644
index 0000000..0832e52
--- /dev/null
+++ b/05_hash_tables/ruby/02_check_voter.rb
@@ -0,0 +1,16 @@
+# in order to be accessible from within the check_voter function
+# voted has to be an instance variable (or global / class)
+@voted = {}
+
+def check_voter(name)
+  if @voted.key?(name) && @voted[name]
+    puts "kick them out!"
+  else
+    @voted[name] = true
+    puts "let them vote!"
+  end
+end
+
+check_voter("tom")
+check_voter("mike")
+check_voter("mike")