Looking for the best way to use switch based on a single character. Seems like I have to convert everything to Int(), which can be very verbose.

keyDown.m

-(void)keyDown:(NSEvent *)event
{
    unichar ch = [[event charactersIgnoringModifiers] characterAtIndex:0];
    
    if (ch == NSUpArrowFunctionKey && (event.modifierFlags & NSCommandKeyMask)) {
        // Scroll to top
        return;
    }
    else if (ch == NSDownArrowFunctionKey && (event.modifierFlags & NSCommandKeyMask)) {
        // Scroll to bottom
        return;
    }
    
    switch (ch) {
        case NSRightArrowFunctionKey:
            // Select the current row
            return;
        case ' ':
            // Scroll down one page
            return;
        default:
            break;
    }
    
    [super keyDown:event];
}

keyDown.swift

func keyDown(theEvent: NSEvent) {
    let char = Int(theEvent.charactersIgnoringModifiers.utf16[0])  // <----- This seems ugly
    let hasCommand = (theEvent.modifierFlags & .CommandKeyMask).value != 0
        
    switch char {
        
        case NSUpArrowFunctionKey where hasCommand == true:
            // Scroll to top
            break
        
        case NSDownArrowFunctionKey where hasCommand == true:
            // Scroll to bottom
            break
        
        case NSRightArrowFunctionKey where hasCommand == true:
            // Select the current row
            break
        
        case Int(" ".utf16[0]):   //  <---- Surely there's a better way of doing this?
            // Scroll down one page
            break
        
        default:
            super.keyDown(theEvent)
    }
}