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0 pointsTurboHaskal5y ago0 comments

Note that Forth also supports locals. These will consume and remove N members from the stack so you can summon them as needed prior to calling the words.

But as someone that really got into Forth this year, I can assure that it does get better once you get more familiar with the language. I used to write commenting the stack effects on each line and now I barely need them as I write words in one sitting without that much effort.

Other developers are doing tacit programming in J or Haskell, pipe forward operators in F# or OCaml and threading macros on Lisp dialects and they seem to do fine.

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mumblemumble5y ago

It's been a long time since I did anything substantive with Forth, but, as I recall, the big problem here is that most Forth guides get so excited to show you how much rope the language gives you that they forget to teach you how not to hang yourself with it. So you're kind of left to figure out all the little idioms and best practices for stack management all on your own.

no-s5y ago

>> So you're kind of left to figure out all the little idioms and best practices for stack management all on your own.

That was my experience learning Forth in the 80's. Initially I tried to add compositional features I was familiar with from APL and Lisp. I raged against the limitations of the cell and schemed to use a typed stack. Eventually I became one with PAD and was able to ALLOT peace to my code. At some point I ranted on how the idiom of counted strings could be generalized to all sorts of useful sin and had an epiphany. 2ROT on!

timClicks5y ago

What does a local variable mean in the context of Forth? Data guaranteed to be in registers, like the in-CPU stack of 8008?

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