Variables and Types

Variables in TrafficScript can contain data of various types: integer, floating point (double) or string. TrafficScript automatically casts (converts) values and variables into the correct type when you evaluate an expression or call a function:

Strings and doubles are rounded up or down to the nearest integer value when they are cast to integers.

$int = 10;
$double = 2.71828;

string.len( $int ); # casts to string, returns 2
string.len( $double ); # casts to string, returns 7

# Set $string to "10, 2.71828"
$string = $int . ", " . $double;

# Convert $string to a number, and add 4:
$r = $string + 4; # $r is 14

In a mixed-type operation such as a compare, where all types are allowed:

1. If either operand is a double, both operands will be converted to doubles, else:
2. If either operand is an integer, both operand will be converted to integers, else:
3. Both operands are strings, in which case a string operation is used.

Owen Garrett [Zeus Dev Team] 01 July 2005