liangchengyou / wow_english

  /// 资源类扩展方法
  extension AssetExtension on String {

    static const String _assetImagePrefix = "assets/images/";

    static const String _assetSoundPrefix = 'sounds/';

    /// 图片url
    String get assetImg => _assetImagePrefix + this;

  
    String get assetPng => '$assetImg.png';
  

    String get assetWebp => '$assetImg.webp';
  

    String get assetGif => '$assetImg.gif';

  
    String get assetSound => _assetSoundPrefix + this;
  
    String get assetMp3 => '$assetSound.mp3';

  }

  
  extension StringExtension on String {
    String get prefixColon => ':$this';
  }