Tom Stuart, the author of the post, also has written an interesting article called "Programming with Nothing" in which he demonstrates how to use first-class fu

Tom Stuart, the author of the post, also has written an interesting article called "Programming with Nothing" in which he demonstrates how to use first-class functions in Ruby to explain the Lambda Calculus.[0] [0] https://codon.com/programming-with-nothing https://codon.com/programming-with-nothing