> Another common criticism of Lua is that it lacks arity checks; that is, if you call a function without enough arguments, it will simply proceed instead of indicating an error. Fennel allows you to write functions that work this way (fn) when it's needed for speed, but it also lets you write functions which check for the arguments they expect using lambda.
I don't understand this; why is this a speed consideration?
I don't understand this; why is this a speed consideration?