For a untype language like js array, since it can be empty, you have to either always check the length, the item returned, or have a precondition to know the array is not empty.
All three of those cases is either code or context you’re holding in your head.
victorpudeyev · · focus · HN ↗
pyrolistical · · focus · HN ↗
For a untype language like js array, since it can be empty, you have to either always check the length, the item returned, or have a precondition to know the array is not empty.
All three of those cases is either code or context you’re holding in your head.
All that stuff is equivalent to a type system