Boolean Conversion

The obj.getBool_converting function is used to convert various types of values to boolean. It supports the following conversions:

• Boolean: Directly converts boolean values.
• Number: Converts 0 to false, and any other number to true.
• String: Converts specific strings to boolean:
  • 'true', to true
  • 'false', to false

If the value cannot be converted to a boolean, an error is raised.

Examples

Correct Conversion

#include "CHashManipulatorOne.c"

CHashNamespace hash;
CHashObjectModule obj;
CHashArrayModule array;
CHashValidatorModule validator;

int main() {
    hash = newCHashNamespace();
    obj = hash.object;
    array = hash.array;
    validator = hash.validator;

    CHashArray *elements = newCHashObject("test", hash.newBool(true));
    bool value = obj.getBool_converting(elements, "test");

    CHash_protected(elements) {
        printf("%s\n", value ? "true" : "false");
    }

    CHash_catch(elements) {
        char *message = hash.get_error_menssage(elements);
        printf("%s\n", message);
    }

    hash.free(elements);
}

This example converts a boolean value to true.

Conversion from Number

#include "CHashManipulatorOne.c"

CHashNamespace hash;
CHashObjectModule obj;
CHashArrayModule array;
CHashValidatorModule validator;

int main() {
    hash = newCHashNamespace();
    obj = hash.object;
    array = hash.array;
    validator = hash.validator;

    CHashArray *elements = newCHashObject("test", hash.newNumber(0));
    bool value = obj.getBool_converting(elements, "test");

    CHash_protected(elements) {
        printf("%s\n", value ? "true" : "false");
    }

    CHash_catch(elements) {
        char *message = hash.get_error_menssage(elements);
        printf("%s\n", message);
    }

    hash.free(elements);
}

This example converts the number 0 to false.

Conversion from String

#include "CHashManipulatorOne.c"

CHashNamespace hash;
CHashObjectModule obj;
CHashArrayModule array;
CHashValidatorModule validator;

int main() {
    hash = newCHashNamespace();
    obj = hash.object;
    array = hash.array;
    validator = hash.validator;

    CHashArray *elements = newCHashObject("test", hash.newString("true"));
    bool value = obj.getBool_converting(elements, "test");

    CHash_protected(elements) {
        printf("%s\n", value ? "true" : "false");
    }

    CHash_catch(elements) {
        char *message = hash.get_error_menssage(elements);
        printf("%s\n", message);
    }

    hash.free(elements);
}

This example converts the string "true" to true.

Incorrect Conversion

#include "CHashManipulatorOne.c"

CHashNamespace hash;
CHashObjectModule obj;
CHashArrayModule array;
CHashValidatorModule validator;

int main() {
    hash = newCHashNamespace();
    obj = hash.object;
    array = hash.array;
    validator = hash.validator;

    CHashArray *elements = newCHashObject("test", hash.newString("aaaa"));
    bool value = obj.getBool_converting(elements, "test");

    CHash_protected(elements) {
        printf("%s\n", value ? "true" : "false");
    }

    CHash_catch(elements) {
        char *message = hash.get_error_menssage(elements);
        printf("%s\n", message);
    }

    hash.free(elements);
}

This example attempts to convert the string "aaaa" to a boolean, which results in an error.