rantav · liorsion · Feb 7, 2013 · Feb 7, 2013 · Feb 7, 2013 · Feb 7, 2013
diff --git a/defensive-programming-reversim-2013.key b/defensive-programming-reversim-2013.key
diff --git a/defensive_programming/1108864_o.gif b/defensive_programming/1108864_o.gif
diff --git a/defensive_programming/always_safeguard_from_exception.rb b/defensive_programming/always_safeguard_from_exception.rb
@@ -0,0 +1,3 @@
+@current_user ||= User.find(session[:user_id]) rescue nil
+
+@current_user ||= User.find(session[:user_id]) if session[:user_id].present? 
diff --git a/defensive_programming/always_validate_input.png b/defensive_programming/always_validate_input.png
diff --git a/defensive_programming/always_validate_your_input.rb b/defensive_programming/always_validate_your_input.rb
@@ -0,0 +1,42 @@
+class Foo
+	def Bar(num, str)
+		if str.isA(String)
+			puts "Stringify Bar"
+			act_on_string(str)
+		elsif num.isA(Fixnum)
+			puts "Fixnumy Bar"
+			act_on_integer(num)
+		else
+			do_something_else(num, str)
+			puts "I don't know what this is"
+		end
+	end
+
+	private
+	def act_on_string(str)
+		if str.isA(String)
+			# do some action
+		else
+			raise Exception
+		end
+	end
+
+	def act_on_integer(str)
+		if str.isA(Number)
+			# do some action
+		else
+			raise Exception
+		end
+	end
+
+	def do_something_else(num, str)
+		if str.isA(String)
+			# do some action
+		elsif num.isA(Fixnum)
+			# do something else
+		else
+			raise Exception
+		end
+	end
+
+end
diff --git a/defensive_programming/be_aware.gif b/defensive_programming/be_aware.gif
diff --git a/defensive_programming/design-patterns.png b/defensive_programming/design-patterns.png
diff --git a/defensive_programming/every_rule.jpeg b/defensive_programming/every_rule.jpeg
diff --git a/defensive_programming/exceptions_alternative.png b/defensive_programming/exceptions_alternative.png
diff --git a/defensive_programming/exceptions_dangerous.png b/defensive_programming/exceptions_dangerous.png
diff --git a/defensive_programming/friend.jpg b/defensive_programming/friend.jpg
diff --git a/defensive_programming/happy_coder.gif b/defensive_programming/happy_coder.gif
diff --git a/defensive_programming/less.jpg b/defensive_programming/less.jpg
diff --git a/defensive_programming/lock.png b/defensive_programming/lock.png
diff --git a/defensive_programming/naming.png b/defensive_programming/naming.png
diff --git a/defensive_programming/naming.rb b/defensive_programming/naming.rb
@@ -0,0 +1,6 @@
+class class_name 
+
+	def take_and_send(queue, msg) 
+	end
+
+end
diff --git a/defensive_programming/patterns.jpeg b/defensive_programming/patterns.jpeg
diff --git a/defensive_programming/psychology.jpeg b/defensive_programming/psychology.jpeg
diff --git a/defensive_programming/remember-fear.png b/defensive_programming/remember-fear.png
diff --git a/defensive_programming/ruby.jpeg b/defensive_programming/ruby.jpeg
diff --git a/defensive_programming/work_done.gif b/defensive_programming/work_done.gif
diff --git a/lock.png b/lock.png
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,3 @@
		@current_user \|\|= User.find(session[:user_id]) rescue nil

		@current_user \|\|= User.find(session[:user_id]) if session[:user_id].present?