Ruby » Ruby master

Description

I think that the previously pipe operator suggested syntax was not reflecting the actual pipe operator in functional programming languages.

In Elixir, Elm, F# etc. The pipe operator takes a value and applies it on the lambda at the right of the operator. Example:

add_one = -> a { a + 1 }
add_two = -> a { a + 2 }

2 |> add_one |> add_two == 5

In combination with the >> operator, some interesting thing can be done.

2 |> add_one >> add_two

you can refactor to

add_tree = add_one >> add_two
2 |> add_tree

We can use the then method on Object to do the equivalent. However this takes more characters and you need to put the closing bracket at the end of the line.

2.then(&add_one >> add_tree)

The suggested syntax would support the actual meaning of the pipe operators in functional languages.