Merge remote-tracking branch 'adambard/master'

1 files changed, 11 insertions, 0 deletions

diff --git a/elixir.html.markdown b/elixir.html.markdown
index c8599838..720e080c 100644
--- a/elixir.html.markdown
+++ b/elixir.html.markdown
@@ -343,6 +343,7 @@ rescue
   RuntimeError -> "rescued a runtime error"
   _error -> "this will rescue any error"
 end
+#=> "rescued a runtime error"
 
 # All exceptions have a message
 try do
@@ -351,6 +352,7 @@ rescue
   x in [RuntimeError] ->
     x.message
 end
+#=> "some error"
 
 ## ---------------------------
 ## -- Concurrency
@@ -369,6 +371,13 @@ spawn(f) #=> #PID<0.40.0>
 # messages to the process. To do message passing we use the `send` operator.
 # For all of this to be useful we need to be able to receive messages. This is
 # achieved with the `receive` mechanism:
+
+# The `receive do` block is used to listen for messages and process
+# them when they are received. A `receive do` block will only
+# process one received message. In order to process multiple
+# messages, a function with a `receive do` block must recursively
+# call itself to get into the `receive do` block again.
+
 defmodule Geometry do
   def area_loop do
     receive do
@@ -384,6 +393,8 @@ end
 
 # Compile the module and create a process that evaluates `area_loop` in the shell
 pid = spawn(fn -> Geometry.area_loop() end) #=> #PID<0.40.0>
+# Alternatively
+pid = spawn(Geometry, :area_loop, [])
 
 # Send a message to `pid` that will match a pattern in the receive statement
 send pid, {:rectangle, 2, 3}