Hi! I have a question about what exact role do higher-order combinators (or function producers) hold in concatenative/tacit programming.
Additionally I would like to ask if there is another way to implement concatenative programming language rather than directly manipulating the stack.
This might look like a newbie question, so if you feel like it, you can freely direct me to external source.
UPDATE: Additionally, I want to know how tight is the relation between the combinators mentioned and Schonfinkel's Combinatory Logic. Thank you :)