检查NSFont是否包含字符

Question

如何以编程方式检查NSFont是否包含诸如'°'之类的Unicode字符？

Answer 1

Ok, try this:

NSFont *font = [NSFont fontWithName:@"Arial" size:14.0];
NSCharacterSet *set = [font coveredCharacterSet];
if (![set characterIsMember:[@"°" characterAtIndex:0]]) {
    NSLog(@"Failed");
} else {
    NSLog(@"Success");
}