Add a getter for if a language is RTL

[adil192]

Motivation

I was implementing

• https://github.com/adil192/saber/issues/576

and I needed to find out if the current language was right-to-left. This is the code I used:

import 'package:intl/intl.dart' as intl;

final rtl = intl.Bidi.isRtlLanguage(
  LocaleSettings.currentLocale.languageTag
);

Developer Experience Add a getter to AppLocale so that the developer can just use e.g.

final rtl = LocaleSettings.currentLocale.isRtl;

[Tienisto]

Slang has no knowledge about locales (en-US is as valid as xy-XY).

So isRtl will be just a delegate to your given intl method.

The problem is that slang should not depend on intl unless it is really necessary.

A clean solution is to write your own extension method for AppLocale.

extension AppLocaleExt on AppLocale {
  bool get isRtl {
    // intl call
  }
}

[adil192]

Ah okay, for some reason I just assumed that slang was already depending on intl Thanks for your consideration