Data commit

Task/Undefined-values/Ruby/undefined-values.rb

@@ -0,0 +1,15 @@
+# Check to see whether it is defined
+puts "var is undefined at first check" unless defined? var
+
+# Give it a value
+var = "Chocolate"
+
+# Check to see whether it is defined after we gave it the
+# value "Chocolate"
+puts "var is undefined at second check" unless defined? var
+
+# I don't know any way of undefining a variable in Ruby
+
+# Because most of the output is conditional, this serves as
+# a clear indicator that the program has run to completion.
+puts "Done"