isValid

isValid(X)

X is a scalar/vector/matrix.

Determine if each element of X is NULL. Return 1 if at least one element is not NULL and 0 otherwise.

isValid(00i);
// output
0

isValid(1 NULL NULL 6 NULL 7);
// output
[1,0,0,1,0,1]

isValid(1/0);
// output
0