October 2014
Intermediate to advanced
280 pages
7h 20m
English
Content preview from Programming Elixir
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Task: Test the Comments
When I document my functions, I like to include examples of the function being used—comments saying things such as, “Feed it these arguments, and you’ll get this result.” In the Elixir world, a common way to do this is to show the function being used in an iex session.
Here’s an example. Our TableFormatter holds a number of self-contained functions that we can document.
| project/5/issues/lib/issues/table_formatter.ex | |
| | defmodule Issues.TableFormatter do |
| | |
| | import Enum, only: [ each: 2, map: 2, map_join: 3, max: 1 ] |
| | |
| | @doc """ |
| | Takes a list of row data, where each row is a HashDict, and a list of |
| | headers. Prints a table to STDOUT of the data from each row |
| | identified by each header. That is, each header ... |
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