From d35cf8e8021203bcdb5b0f3d8a6e290b1c7e54cd Mon Sep 17 00:00:00 2001
From: Karthikeyan A K <mindaslab@gmail.com>
Date: Tue, 29 Oct 2013 21:55:44 +0530
Subject: [PATCH] metaprogramming started

---
 aray_1.rb => array_1.rb     |  0
 aray_2.rb => array_2.rb     |  0
 define_method.rb            | 10 ++++++++++
 function_many_arguments.rb  |  3 ++-
 inheritance.rb              |  2 +-
 method_missing.rb           | 15 +++++++++++++++
 method_missing_in_action.rb | 18 ++++++++++++++++++
 send.rb                     | 12 ++++++++++++
 8 files changed, 58 insertions(+), 2 deletions(-)
 rename aray_1.rb => array_1.rb (100%)
 rename aray_2.rb => array_2.rb (100%)
 create mode 100644 define_method.rb
 create mode 100644 method_missing.rb
 create mode 100644 method_missing_in_action.rb
 create mode 100644 send.rb

diff --git a/aray_1.rb b/array_1.rb
similarity index 100%
rename from aray_1.rb
rename to array_1.rb
diff --git a/aray_2.rb b/array_2.rb
similarity index 100%
rename from aray_2.rb
rename to array_2.rb
diff --git a/define_method.rb b/define_method.rb
new file mode 100644
index 0000000..bee7bae
--- /dev/null
+++ b/define_method.rb
@@ -0,0 +1,10 @@
+# define_method.rb
+
+class Square
+  define_method :area do |side|
+    side * side
+  end
+end
+
+s = Square.new
+puts s.area 5
diff --git a/function_many_arguments.rb b/function_many_arguments.rb
index a01cdc4..869ca95 100644
--- a/function_many_arguments.rb
+++ b/function_many_arguments.rb
@@ -5,4 +5,5 @@ def print_line char = '_' length = 20
 end
 
 print_line
-print_line 40
+print_line '*'
+print_line '&', 40
diff --git a/inheritance.rb b/inheritance.rb
index f69e6c2..4e488be 100644
--- a/inheritance.rb
+++ b/inheritance.rb
@@ -28,7 +28,7 @@ def side_length
 	end
 	
 	def side_length=(length)
-		@width = @height = length
+		@width = @length = length
 	end
 end
 
diff --git a/method_missing.rb b/method_missing.rb
new file mode 100644
index 0000000..455a0c1
--- /dev/null
+++ b/method_missing.rb
@@ -0,0 +1,15 @@
+# method_missing.rb
+
+class Something
+	def method_missing method, *args, &block
+		puts "You called: #{method}"
+		p args
+		block.call 7
+	end
+end
+
+s = Something.new
+s.call_method "boo", 5 do |x|
+	x.times{ puts "in block" }
+end
+
diff --git a/method_missing_in_action.rb b/method_missing_in_action.rb
new file mode 100644
index 0000000..d029aac
--- /dev/null
+++ b/method_missing_in_action.rb
@@ -0,0 +1,18 @@
+# method_missing_in_action.rb
+
+class Person
+  attr_accessor :name, :age
+  
+  def initialize name, age
+    @name, @age = name, age
+  end
+  
+  def method_missing method_name
+    method_name.to_s.match(/get_(\w+)/)
+    eval("self.#{$1}")
+  end
+end
+
+person = Person.new "Zigor", "67893"
+puts "#{person.get_name} is #{person.get_age} years old"
+
diff --git a/send.rb b/send.rb
new file mode 100644
index 0000000..8550429
--- /dev/null
+++ b/send.rb
@@ -0,0 +1,12 @@
+class Person
+	attr_accessor :name
+
+	def speak
+		"Hello I am #{@name}"
+	end
+end
+
+
+p = Person.new
+p.name = "Karthik"
+puts p.send(:speak)