| // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'characters.dart' as chars; |
| |
| /// Returns whether [char] is the code for an ASCII letter (uppercase or |
| /// lowercase). |
| bool isAlphabetic(int char) => |
| (char >= chars.UPPER_A && char <= chars.UPPER_Z) || |
| (char >= chars.LOWER_A && char <= chars.LOWER_Z); |
| |
| /// Returns whether [char] is the code for an ASCII digit. |
| bool isNumeric(int char) => char >= chars.ZERO && char <= chars.NINE; |
