isNull Syntax isNull(X) Arguments X is a scalar/pair/vector/matrix. Details Return true if an element is NULL. Examples isNull(00i); // output true isNull(1 NULL NULL 6 NULL 7); // output [false,true,true,false,true,false] isNull(1/0); // output 1 x=1 NULL 5 NULL 4 6$2:3; x; #0 #1 #2 1 5 4 6 isNull(x); #0 #1 #2 0 0 0 1 1 0 Related functions: hasNull, nullFill
Examples isNull(00i); // output true isNull(1 NULL NULL 6 NULL 7); // output [false,true,true,false,true,false] isNull(1/0); // output 1 x=1 NULL 5 NULL 4 6$2:3; x; #0 #1 #2 1 5 4 6 isNull(x); #0 #1 #2 0 0 0 1 1 0 Related functions: hasNull, nullFill
