The pipe operator

The |> symbol used in the snippet above is the pipe operator: it simply takes the output from the expression on its left side and passes it as the first argument to the function call on its right side. It’s similar to the Unix | operator. Its purpose is to highlight the flow of data being transformed by a series of functions. To see how it can make the code cleaner, have a look at the example above rewritten without using the |> operator:

iex> Enum.sum(Enum.filter(Enum.map(1..100_000, &(&1 * 3)), odd?))
7500000000

| Find more about the pipe operator by reading its documentation. | | --- | --- |