On the iPhone, what would be the locale identifier for forcing US english representations of numbers?

Question

In particular I want to guarantee that the formatting of a number uses , (commmas) for separating digits regardless of the current locale of the device.

NSNumberFormatter *numFormatter = [[NSNumberFormatter alloc] init];
[numFormatter setLocal:@"??????"]

Answer 1

Tried "en-US" ?

Answer 2

The U.S. uses a period as a decimal separator. I assume you mean that you want to use a comma as a grouping separator.

You don't need to set the locale for this in your NSNumberFormatter, you can set both directly using code like the following:

[numFormatter setGroupingSeparator:","];
[numFormatter setUsesGroupingSeparator:YES];
[numFormatter setDecimalSeparator:"."];