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authorDavid Underwood <david.underwood@jadedpixel.com>2013-07-03 15:21:29 -0400
committerDavid Underwood <david.underwood@jadedpixel.com>2013-07-03 15:21:29 -0400
commit99192fea522aa80ec01aeb7d4e570ee24088981b (patch)
tree71dfc64e86bc9f9013366fc958ede7e887fdfd08 /ruby.html.markdown
parent705e8fd023f6c61e4ccb79095238474ee922a0bd (diff)
Adds class documentation written by @joelwalden in #95
Diffstat (limited to 'ruby.html.markdown')
-rw-r--r--ruby.html.markdown52
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"
``` \ No newline at end of file