Is there a `pipe` equivalent in ruby?

Question

Occasionally when writing Ruby I find myself wanting a pipe method, similar to tap but returning the result of calling the block with

Answer 1

Ruby 2.5 introduced Object.yield_self which is exactly the pipe operator you're using: it receives a block, passes self as the first argument to it and returns the result of evaluating the block.

class Object
  def yield_self(*args)
    yield(self, *args)
  end
end

Example usage:

"Hello".yield_self { |str| str + " World" }
# Returns "Hello World"

You can also read a little more about it in the following blog posts:

1. Explains the difference with Rails' try and Ruby's tap methods
2. Some very nice examples of using yield_self to simplify code