I'm not sure what you mean by "implicit variable names". If it's that you don't need to declare variables before you use them, use can use 'use strict' to avoi

I'm not sure what you mean by "implicit variable names". If it's that you don't need to declare variables before you use them, use can use 'use strict' to avoid that. If you're referring to how things like cmp takes a block with $a and $b variables, it saves you having to extract values from arguments for this block which should be really short.