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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 i helper

IEx has a really handy helper function available to us: i. This function comes in two separate arities, i/0 and i/1 (arities, in this case, being the number of arguments that we have to supply to each version of the function). i/0 displays information about the last value output in IEx, whereas i/1 displays information about a particular value or variable. Let's take a look at a few examples:

iex(3)> x = 55iex(4)> iTerm5Data typeIntegerReference modulesIntegerImplemented protocolsIEx.Info, Inspect, List.Chars, String.Chars

Let's talk about what the preceding example is giving us. First, it tells us the Term, which almost literally means the value itself. Next, we have the Data type, which tells us ...

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Publisher Resources

ISBN: 9781787284197Supplemental Content