talibNull

swordfish.function.talibNull()

Traverse each vector (v1, v2, …, vn) based on the index starting from 0 and return a tuple.

If all values at index i (v1[i], v2[i], …, vn[i] ) are non-null values, then the elements at index 0 to index i take the null values, and values of the element after index i remain unchanged.