std.locale

[Christopher Wright]

Andrei Alexandrescu wrote:
> The localized version will look like this:
> 
> auto format = "File `%s' not found, system error is %s.";
> auto localFormat = currentLocale ? currentLocale.peek(format) : null;
> if (!localFormat) localFormat = format;
> throw Exception(localFormat, filename, errnomsg);

This short example suggests:
Locale.peek(T)(char[] key, T ifNotFound = T.init)

auto localFormat = currentLocale ? currentLocale.peek(format, format) : 
format;
throw new Exception(localFormat);