coercion

The following tables shows how automatic coercion is applied to a general expression

RESULT   =   OPND1   op   OPND2

RESULT	OPND1	OPND2
int	int	int
float	float	float
string	string	string
float	float	int
float	int	float
string	string	int
int	int	string
string	string	float
float	float	string

explicit coercion between types

$val	coerce any value to string
int(val)	coerce to integer any value of type int float string obj_id ctl_id
float(val)	coerce real any value of type int float string

coercion of structures and arrays to strings

(packing structures and arrays into strings)

structures

tmp = pack(val)

format of packed string

{member1=value}{member2=value}{member3=value}{memberN=value}

where member is the name of the member within the structure

arrays

tmp = pack(val)

format of packed string

[value0][value1][value2][valueN]

where valueN is the value of element N of the arrays

A two dimensional array would be packed so:

[ [Jval0][Jval1][JvalN] ][ [Kval0][Kval1][KvalN] ][ [Lval0][Lval1][LvalN] ]

A structure within a structure would be packed so:

{Jmem1=value}{Jmem2={Kmem1=value}{Kmem2=value}{KmemN=value}}{Jmem3=value}{JmemN=value}

Arrays of structures

[ {J1=value}{J2=value}{JN=value} ][ {K1=value}{K2=value}{KN=value} ]

Structure containing an array

{member1=value}{member2=[value0][value1][value2][valueN]}{member3=value}{memberN=value}