NSString representation of fractions using unicode

Question

I am trying to \"nicely\" display fractions in my iPhone application. Previously I have been using a tedious switch statement leading to hardcoded unicode characters for the

Answer 1

I happened to only want simple fractions for recipes to be converted to Unicode vulgar fractions.

Here is how you can do it:

CGFloat quantityValue = 0.25f;
NSString *quantity = nil;
if (quantityValue == 0.25f) {
    // 1/4
    const unichar quarter = 0xbc;
    quantity = [NSString stringWithCharacters:&quarter length:1];
} else if (quantityValue == 0.33f) {
    // 1/3
    const unichar third = 0x2153;
    quantity = [NSString stringWithCharacters:&third length:1];
} else if (quantityValue == 0.5f) {
    // 1/2
    const unichar half = 0xbd;
    quantity = [NSString stringWithCharacters:&half length:1];
} else if (quantityValue == 0.66f) {
    // 2/3
    const unichar twoThirds = 0x2154;
    quantity = [NSString stringWithCharacters:&twoThirds length:1];
} else if (quantityValue == 0.75f) {
    // 3/4
    const unichar threeQuarters = 0xbe;
    quantity = [NSString stringWithCharacters:&threeQuarters length:1];
}
NSLog(@"%@", quantity);