Iterator syntax
A common pattern in functional programming is the traversal of data structures,
particularly lists, in a specified order accumulating some values. If you've
used languages like Haskell or OCaml, you must have come across the "fold left"
(foldl) and "fold right" (foldr) higher-order functions which implement this
pattern. These functions are also available in Juvix. In this
blog post, I describe an iterator syntax I designed for Juvix which allows
expressing folds (and maps, filters and more) in a readable manner.