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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.

See Also