As it knows precisely what variables are what and what scope they are in, it can make a number of optimisations that otherwise the compiler could not do, as it always couldn't be sure that a new, undeclared variable might just appear out of the blue.
As far as I know Strict and SuperStrict both compile to the same code, it's just a matter of having to declare ints as such or not. But if everything apart from int has to be declared, the compiler can know without a doubt what's meant to be an int.
As far as I know Strict and SuperStrict both compile to the same code, it's just a matter of having to declare ints as such or not. But if everything apart from int has to be declared, the compiler can know without a doubt what's meant to be an int.