returns true if argument is numeric zero iszero returns one if its argument is an integer 0, a float 0.0 or a double 0.0 For any other arguments, of whatever type, it will return zero.
returns true if argument is numeric zero iszero returns one if its argument is an integer 0, a float 0.0 or a
double 0.0 For any other arguments, of whatever type, it will return zero.