grim kiln
I have a small snippet that I'm trying to use for the verification of an empty array. Basically, it should check if there's at least one element in the array. If there is one, returns false, otherwise true.
Is this the most optimized way to create this function?
type EmptyArr<T extends any[]> = T['length'] extends 0 ? true : false
type E1 = [1,2,3] //false
type E2 = [] //true
type T1 = EmptyArr<E1>
maiden fox
Not sure what you mean by "fully optimized" here.
Is this some sort of type-level metaprogramming project or is this intended to be used with JS code?
grim kiln
Not sure what you mean by "fully optimized" here.
Basically, is there another way I could do the same empty array verification with less code? Or is this good enough?
junior sandal
so you definition of "optimized" is basically "shorter"? 🤔
but to answer your question: no, I don't think there is a shorter way to do that
merry pewter
T extends readonly [] would be marginally faster since there's no indexed access type right
grim kiln
so you definition of "optimized" is basically "shorter"? 🤔
Correct.