I spent a few months playing with forth after seeing a talk on it at Boston Code Camp. I struggled to find a practical application (I do web dev), but it had a lasting effect on my style of programming. Something about the way you factor a forth program changed me. Now I mainly do functional-flavored typescript, and while forth is NOT an FP language, there is a lot that carries over.
In Forth, the language rewards you for keeping your words focused and applying the single responsibility principal. It’s very easy to write a lot of small words that do one thing and then compose your program out of them. It’s painful to not do this.
There is no state outside the stack. If you call a word it pulls values off the stack and deposits values back on the stack. Having no other mechanism for transferring data requires you to basically create data pipelines that start to look like spoken language.
In Forth, the language rewards you for keeping your words focused and applying the single responsibility principal. It’s very easy to write a lot of small words that do one thing and then compose your program out of them. It’s painful to not do this.
There is no state outside the stack. If you call a word it pulls values off the stack and deposits values back on the stack. Having no other mechanism for transferring data requires you to basically create data pipelines that start to look like spoken language.