ref: d4fac4da419b09f014c27b0f4334f1c8f4314faf
dir: /lib/std/try.myr/
use "result" use "option" use "fmt" pkg std = generic try : (v : result(@a, @b) -> @a) generic tryv : (v : result(@a, @b), d : @a -> @a) generic get : (v : option(@a) -> @a) generic getv : (v : option(@a), d : @a -> @a) generic canget : (o : option(@a) -> bool) ;; generic try = {v match v | `Ok x: -> x | `Err m: fatal("error: {}\n", m) ;; } generic tryv = {v, d match v | `Ok x: -> x | `Err m: -> d ;; } generic canget = {o match o | `None: -> false | `Some _: -> true ;; } generic get = {v match v | `Some x: -> x | `None: fatal("error: option had `None\n") ;; } generic getv = {v, d match v | `Some x: -> x | `None: -> d ;; }