diff options
Diffstat (limited to 'stdlib/maybe.lisp')
| -rw-r--r-- | stdlib/maybe.lisp | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/stdlib/maybe.lisp b/stdlib/maybe.lisp deleted file mode 100644 index 086b0dc..0000000 --- a/stdlib/maybe.lisp +++ /dev/null @@ -1,51 +0,0 @@ -; LIB - -(let! Maybe/just (\[a] - ["Maybe" "just" a])) -(let! Maybe/nothing (\[] - ["Maybe" "nothing"])) - -(let! Maybe/#at (\[n seq] - (match seq - [] - (fatal! "Maybe/#at out of bounds") - otherwise - (match n - 0 - (head seq) - otherwise - (Maybe/#at (- n 1) (tail seq)))))) - -(let! Maybe/unpack (Maybe/#at 2)) -(let! Maybe/kind (Maybe/#at 1)) - -(let! Maybe/map (\[f m] - (match (Maybe/kind m) - "just" (Maybe/just (f (Maybe/unpack m))) - "nothing" (Maybe/nothing)))) - -(let! Maybe/and-then (\[f m] - (match (Maybe/kind m) - "just" (f (Maybe/unpack m)) - "nothing" (Maybe/nothing)))) - -; TESTING - -;; (let! print-line! (\[s] -;; (print! (concat s "\n")))) - -;; (let! a (Maybe/just 10)) -;; (let! b (Maybe/nothing)) - -;; (Maybe/map (+ 5) a) -;; (Maybe/map (+ 5) b) - -;; (Maybe/and-then (\[n] (Maybe/just (+ n 5))) a) -;; (Maybe/and-then (\[n] (Maybe/just (+ n 5))) b) - -;; (let! m (Maybe/just 10)) -;; (match m -;; (Maybe/just _) -;; (print-line! (fmt "found just {0}!" [(Maybe/unpack m)])) -;; (Maybe/nothing) -;; (print-line! "found nothing!")) |
