Null Initialization
For integral, floating, and temporal scalar NULL initialization, use 00<data type symbol >.
To initialize a NULL vector, use take (00<data type symbol>, n), where n is the number of elements in the vector.
$ x=00b;
// b indicates a BOOL constant
$ typestr x;
BOOL
$ bool();
00b
// we can use type functions such as bool, char, short, int, etc to create a NULL scalar if no argument is provided.
$ x=00i;
// i indicates a INT constant
$ typestr x;
INT
$ x=00l;
// l indicates a LONG constant
$ typestr x;
LONG
$ x=take(00b, 10);
// initialize a NULL BOOL VECTOR with 10 elements.
$ x;
[,,,,,,,,,]
$ typestr x;
FAST BOOL VECTOR
$ x=take(00i, 10)
// initialize a NULL INT VECTOR with 10 elements
$ x;
[,,,,,,,,,]
$ x=array(int,10, 100, NULL);
// initialize a NULL INT VECTOR with 10 elements.
$ x;
[,,,,,,,,,]
$ x=true false NULL true;
$ x;
[1,0, ,1]
$ m=matrix(double,3,3)*NULL;
$ m;
#0 |
#1 |
#2 |
---|---|---|
$ shape m;
3:3
$ typestr m;
DOUBLE MATRIX