Discussion :

[Jinkas99]

Bonjour,

J'essaie de compiler le code ci-dessous mais j'obtiens une erreur.

Code :

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using System;
 
public class Song
{
    private string name;
    public Song nextSong { get; set; }
 
    public Song(string name)
    {
        this.name = name;
    }
 
    public void setNextSong(Song nextSong) 
    {
        this.nextSong = this.nextSong;
    }
 
    public bool isRepeatingPlaylist()
    {
        Song slowStep = this;
        Song fastStep = this;
 
        while (((fastStep != null) && (fastStep.nextSong != null))) 
        {
            slowStep = slowStep.nextSong;
            fastStep = fastStep.nextSong.nextSong;
 
            if ((slowStep == fastStep))
            {
                return true;
            }
 
        }
 
            return false;
     }
 
    public static void Main(string[] args)
    {
        Song first = new Song("Hello");
        Song second = new Song("Eye of the tiger");
 
        first.nextSong = second;
        second.nextSong = first;
 
        Console.WriteLine(first.IsRepeatingPlaylist());
    }
}

L'erreur est la suivante :

Compiler output:
PlaylistTest.cs(15,30): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(21,30): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(26,47): error CS1061: 'Song' does not contain a definition for 'IsRepeatingPlaylist' and no extension method 'IsRepeatingPlaylist' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(35,15): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(36,16): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(37,31): error CS1061: 'Song' does not contain a definition for 'IsRepeatingPlaylist' and no extension method 'IsRepeatingPlaylist' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(65,15): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(66,15): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(67,15): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(68,15): error CS1061: 'Song' does not contain a definition for 'NextSong' and no extension method 'NextSong' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
PlaylistTest.cs(69,31): error CS1061: 'Song' does not contain a definition for 'IsRepeatingPlaylist' and no extension method 'IsRepeatingPlaylist' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)
Playlist.cs(46,33): error CS1061: 'Song' does not contain a definition for 'IsRepeatingPlaylist' and no extension method 'IsRepeatingPlaylist' accepting a first argument of type 'Song' could be found (are you missing a using directive or an assembly reference?)

Merci pour votre aide

[PixelJuice]

Bonjour,

Il aurait été intéressant de voir le code de PlaylistTest aussi mais dans ton cas pas besoin de l'avoir, les erreurs sont très parlantes :

Tu appelles des variables et des méthodes avec une majuscule alors que tu les a définies sans majuscules :

Petit rappel: En C#, on mets toujours une majuscule au début d'un nom de méthode, et c'est valable aussi pour les variables qui sont publiques.

[Jinkas99]

Merci beaucoup. ça compile.

Code corrigé :

Code :

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using System;
 
public class Song
{
    private string Name;
    public Song NextSong { get; set; }
 
    public Song(string name)
    {
        this.Name = name;
    }
 
    public void setNextSong(Song NextSong) 
    {
        this.NextSong = this.NextSong;
    }
 
    public bool IsRepeatingPlaylist()
    {
        Song slowStep = this;
        Song fastStep = this;
 
        while (((fastStep != null) && (fastStep.NextSong != null))) 
        {
            slowStep = slowStep.NextSong;
            fastStep = fastStep.NextSong.NextSong;
 
            if ((slowStep == fastStep))
            {
                return true;
            }
 
        }
 
            return false;
     }
 
    public static void Main(string[] args)
    {
        Song first = new Song("Hello");
        Song second = new Song("Eye of the tiger");
 
        first.NextSong = second;
        second.NextSong = first;
 
        Console.WriteLine(first.IsRepeatingPlaylist());
    }
}

[Noxen]

Code :

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    public void setNextSong(Song NextSong) 
    {
        this.NextSong = this.NextSong;
    }

Ça ne sert strictement à rien.

[Jinkas99]

Effectivement je me suis trompé.

Merci pour votre remarque.