To boolean
Function Syntax
boolean to_boolean(int convert )
boolean to_boolean(float convert )
boolean to_boolean(string convert )
- convert is the int, float, or string to convert
Datatype behaviour: This function converts the supplied datatype to a boolean value. For strings, this means that it will return false for everything except "true". For all other datatypes, it returns to_int(anything) != 0. More details:
- As indicated, integers return true for anything except 0, even negative values.
- floats return true for anything except -1.0 to 1.0 (not inclusive). This is because to_int(float) truncates the float.
Note: The string is case insensitive.
Code Samples
Following example shows basic to_boolean operations.
string first, second, third, fourth;
int fifth, sixth;
first = "random stuff";
second = "true";
third = "tRuE";
fourth = "TRUE";
fifth = 5;
sixth = 0;
print(first+" gives "+to_boolean(first)+".", "blue");
print(second+" gives "+to_boolean(second)+".", "blue");
print(third+" gives "+to_boolean(third)+".", "blue");
print(fourth+" gives "+to_boolean(fourth)+".", "blue");
print(fifth+" gives "+to_boolean(fifth)+".", "blue");
print(sixth+" gives "+to_boolean(sixth)+".", "blue");It gives the following output.
random stuff gives false. true gives true. tRuE gives true. TRUE gives true. 5 gives true. 0 gives false.