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Added documentation on receive do blocks in Elixir.

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chris@chriszimmerman.net 2015-10-17 19:37:47 -04:00
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@ -369,6 +369,13 @@ spawn(f) #=> #PID<0.40.0>
# messages to the process. To do message passing we use the `send` operator. # 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 # For all of this to be useful we need to be able to receive messages. This is
# achieved with the `receive` mechanism: # 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 defmodule Geometry do
def area_loop do def area_loop do
receive do receive do