NSExpression メモ

コード:

 NSDictionary *d0= [NSDictionary dictionaryWithObjectsAndKeys:@"val10", @"key0", nil];
 NSDictionary *d1= [NSDictionary dictionaryWithObjectsAndKeys:@"val11", @"key0", nil];
 NSDictionary *d2= [NSDictionary dictionaryWithObjectsAndKeys:@"val02", @"key0", nil];
 NSArray *anArray= [NSArray arrayWithObjects:d0, d1, d2, nil];

 NSExpression* expression = [NSExpression expressionForKeyPath:@"key0"];
 
 id result= [expression expressionValueWithObject:anArray
            context:nil];
 NSLog(@"result: %@", result);

結果:

result: (
    val10,
    val11,
    val02
)