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Diffstat (limited to 'ruby.html.markdown')
-rw-r--r-- | ruby.html.markdown | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/ruby.html.markdown b/ruby.html.markdown index 62db549c..7863ebd2 100644 --- a/ruby.html.markdown +++ b/ruby.html.markdown @@ -251,4 +251,56 @@ surround { puts 'hello world' } # { # hello world # } + + +# Define a class with the class keyword +class Human + + # A class variable. It is shared by all instances of this class. + @@species = "H. sapiens" + + # Basic initializer + def initialize(name, age=0): + # Assign the argument to the "name" instance variable for the instance + @name = name + # If no age given, we will fall back to the default in the arguments list. + @age = age + end + + # Basic setter method + def name=(name) + @name = name + end + + # Basic getter method + def name + @name + end + + # A class method; uses self to distinguish from instance methods. (Can only be called on class, not an instance). + + def self.say(msg) + puts "#{msg}" + end + + def species + @@species + end + +end + + +# Instantiate a class +jim = Human.new("Jim Halpert") + +dwight = Human.new("Dwight K. Schrute") + +# Let's call a couple of methods +jim.species #=> "H. sapiens" +jim.name #=> "Jim Halpert" +dwight.species #=> "H. sapiens" +dwight.name #=> "Dwight K. Schrute" + +# Call the class method +Human.say("Hi") #=> "Hi" ```
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