...gives me code that looks weird since I did imperative but straight-forward. The second link even shows some simplicity and less tangling vs imperative examples. I wonder what makes you think FSM's in Haskell turn into disasters if these examples were so easy.
Besides, you shouldn't be hand-coding FSM's to begin with. The various sub-fields of programming and IT I've studied all came from different directions to same best practice for FSM's: DSL's that generate them. LISP people did it forever. iMatix did it for reliable, distributed apps in C. Haskell embeddings go from stuff like that up to hard real-time C. Theres also open-source projects that compile easy descriptions of them to about any language. The DSL can be included in repo right next to resultant code for documentation purposes. Hardware designers also synthesize and transform them with automated tools.
Given that, the difficulty of doing FSM's by hand should never be a problem for any language. Just don't do it by hand. Automate the tedious stuff machines are good at. Hand-code the stuff humans are good at.
https://wiki.haskell.org/Real_World_Applications/Event_Drive...
https://accu.org/index.php/journals/2199
...gives me code that looks weird since I did imperative but straight-forward. The second link even shows some simplicity and less tangling vs imperative examples. I wonder what makes you think FSM's in Haskell turn into disasters if these examples were so easy.
Besides, you shouldn't be hand-coding FSM's to begin with. The various sub-fields of programming and IT I've studied all came from different directions to same best practice for FSM's: DSL's that generate them. LISP people did it forever. iMatix did it for reliable, distributed apps in C. Haskell embeddings go from stuff like that up to hard real-time C. Theres also open-source projects that compile easy descriptions of them to about any language. The DSL can be included in repo right next to resultant code for documentation purposes. Hardware designers also synthesize and transform them with automated tools.
Given that, the difficulty of doing FSM's by hand should never be a problem for any language. Just don't do it by hand. Automate the tedious stuff machines are good at. Hand-code the stuff humans are good at.