chore: random in monad
chore: random in monad

rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming,rockdragon/julia-programming