ref: 9673e11f4a1c9d3376a74d444e7c2e21ad65ebf2 dir: /libstd/swap.myr/
pkg std = generic swap : (a : @a#, b : @a# -> void) ;; generic swap = {a : @a#, b : @a# var t t = a# a# = b# b# = t }