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Phoenix Web Development
book

Phoenix Web Development

by Brandon Richey
April 2018
Beginner to intermediate content levelBeginner to intermediate
406 pages
9h 33m
English
Packt Publishing
Content preview from Phoenix Web Development

Getting more information with the h helper

IEx also provides us with another incredibly helpful built-in function: h. Similar to i, h has two arities available for us to use: h/0, which displays the help page for IEx, and h/1, which displays the help for a particular module. So, while the following example won't work:

iex(5)> h 5Invalid arguments for h helper: 5

This following example will:

iex(6)> h IntegerIntegerFunctions for working with integers.

Using i and h effectively will go a long way towards helping us understand more of Elixir as we go along!

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Publisher Resources

ISBN: 9781787284197Supplemental Content