CASTING



Casting to (std::string):


Native type |  Value returned
------------+-------------------------------
VARIANT_NUL | empty string
VARIANT_STR | copy of native string
VARIANT_BOO | "true" or "false" as string
VARIANT_INT | string representation of integer, e.g. "42"
VARIANT_FLO | string representation of double, e.g. "-42.5"

Casting to (bool):

Native type |  Value returned
------------+-------------------------------
VARIANT_NUL | boolean false
VARIANT_STR | false for zero-length string, true otherwise
VARIANT_BOO | native value (true or false)
VARIANT_INT | false for value 0, true otherwise
VARIANT_FLO | false for value 0., true otherwise

Casting to int:

Native type | Value returned
------------+-------------------------------
VARIANT_NUL | 0
VARIANT_STR | exception thrown
VARIANT_BOO | 0 for false, 1 for true
VARIANT_INT | native value
VARIANT_FLO | native value truncated to integer part

Casting to float, double:

- similar to casting to int, except native doubles are not truncated to int