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How can I view methods associated with an object?

Let’s say we have the following module

defmodule Reminder do
  def alarm(time, day) do

We can check what methods are on it by providing a :functions atom

# [alarm: 2]

As we can see, this Reminder module has an alarm method, with an arity of 2.

How can I view help documentation for a module

The iex interpreter includes a function called h which can be used to show documentation for a module

h String
# h/1

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