sandeshsoni · February 6, 2016 03:40 · Feb 6, 2016 · Feb 6, 2016
diff --git a/intro.ex b/intro.ex
@@ -11,13 +11,13 @@ defmodule ModuleName do
 # this is a module
 end
 
-defmod SomeModule do
+defmodule SomeModule do
   def public_method do
   end
 end
 # called as public_method or SomeModule.public_method
 
-defmod SomeModule do
+defmodule SomeModule do
   defp private_method do
   end
 end

diff --git a/intro.ex b/intro.ex
@@ -0,0 +1,59 @@
+# This is a comment
+# The first thing in any language
+
+next_integer_after = fn x -> x+1
+end
+
+# This is an annoymous function.
+# called inside function as next_integer_after(3)
+
+defmodule ModuleName do
+# this is a module
+end
+
+defmod SomeModule do
+  def public_method do
+  end
+end
+# called as public_method or SomeModule.public_method
+
+defmod SomeModule do
+  defp private_method do
+  end
+end
+# called inside module by just private_method
+
+# one more common stuff we do. Concatenation of strings
+first_name = "lorem"
+last_name = "epsum"
+
+full_name = first_name <> " " <> last_name
+
+# lets make it a simple anonymous function,
+greet_person = fn {greeting, first_name, last_name} ->
+  greeting <> first_name <> last_name
+end
+
+# But we may not always have greeting present.
+# How about default greet ?
+
+greet_person = fn {greeting // "hi", first_name, last_name} ->
+  greeting <> first_name <> last_name
+end
+
+called as greet_person.({"good morning", "Anil", "W"})
+
+# But we are so many people here.
+# ok, lets have one more.
+
+greet_team = fn
+when {greeting // "hi", team} ->
+  greeting <> " " <> team
+end
+
+{greeting // "hi", first_name, last_name} ->
+  greeting <> first_name <> last_name
+end
+
+
+