alt Hacker NewsThe base pipe has an underscore as a placeholder. From the docs:
Usage:
lhs |> rhs
lhs: expression producing a value.
rhs: a call expression.
It is also possible to use a named argument with the placeholder
‘_’ in the ‘rhs’ call to specify where the ‘lhs’ is to be
inserted. The placeholder can only appear once on the ‘rhs’.
I believe this wasn't added in the initial implementation of the base pipe so some didn't realize it got included later, and still does not let you use constructs like e.g. combining multiple transformations of the input on the rhs. But for most purposes it's certainly sufficient