How to check if a number is a valid RGB component

Make sure your every Red Green Blue Alpha component is a valid NSInteger in the range [0 ; 255].


/** Check whether a number might be a valid RGB component.

 Range of RGB is [0;255].

 @param num Number to test.
 @return Returns true if the number is in the range, false otherwise.

 */
+ (BOOL)isValidRgbComponent:(NSInteger)num {
    if (num < 0 || num > 255) {
        return NO;
    }
    return YES;
}


Download the ready-for-use source file (.m) of How to check if a number is a valid RGB component