public SchuelerList Filter(string klasse)
{
SchuelerList resultList = new SchuelerList();
foreach (Schueler schueler in this)
{
if (schueler.Klasse == klasse)
{
resultList.Add(schueler);
}
}
return(resultList);
}
public SchuelerList Where(MyFunc <Schueler, bool> predicate)
{
SchuelerList resultList = new SchuelerList();
foreach (Schueler schueler in this)
{
if (predicate(schueler))
{
resultList.Add(schueler);
}
}
return(resultList);
}
public SchuelerList Filter(FilterHandler predicate)
{
SchuelerList resultList = new SchuelerList();
foreach (Schueler schueler in this)
{
if (predicate(schueler))
{
resultList.Add(schueler);
}
}
return(resultList);
}
static void Main(string[] args)
{
// Eine Liste von Schülern wird erstellt und miottels initializer befüllt.
SchuelerList schuelers = new SchuelerList();
schuelers.Add(new Schueler()
{
Id = 1, Nachame = "Muster1", Vorname = "Max1", Klasse = "3AHIF"
});
schuelers.Add(new Schueler()
{
Id = 2, Nachame = "Muster2", Vorname = "Max2", Klasse = "3AHIF"
});
schuelers.Add(new Schueler()
{
Id = 3, Nachame = "Muster3", Vorname = "Max3", Klasse = "3AHIF"
});
schuelers.Add(new Schueler()
{
Id = 4, Nachame = "Muster4", Vorname = "Max4", Klasse = "4AHIF"
});
schuelers.Add(new Schueler()
{
Id = 5, Nachame = "Muster5", Vorname = "Max5", Klasse = "5AHIF"
});
SchuelerList result = null;
//TODO: Implementierung!
// Ausgabe
foreach (Schueler s in result)
{
Console.WriteLine($"{s.Id}: {s.Vorname} {s.Nachame} ({s.Klasse})");
}
}
public static void Main(string[] args)
{
// Eine Liste von Schülern wird erstellt und mittels initializer befüllt.
SchuelerList schuelers = new SchuelerList()
{
new Schueler()
{
Id = 1, Nachame = "Muster1", Vorname = "Max1", Klasse = "3AHIF"
},
new Schueler()
{
Id = 2, Nachame = "Muster2", Vorname = "Max2", Klasse = "3AHIF"
},
new Schueler()
{
Id = 3, Nachame = "Muster3", Vorname = "Max3", Klasse = "3AHIF"
},
new Schueler()
{
Id = 4, Nachame = "Muster4", Vorname = "Max4", Klasse = "4AHIF"
},
new Schueler()
{
Id = 5, Nachame = "Muster5", Vorname = "Max5", Klasse = "5AHIF"
}
};
SchuelerList result1 = null;
SchuelerList result2 = null;
//TODO: Implementierung!
result1 = schuelers.Filter(MyFilterCondition);
result2 = schuelers.Where(s => s.Klasse == "3AHIF");
int result3 = schuelers.CalculateSum((idA, idB) => idA + idB);
int result4 = schuelers.CalculateSum(
(idA, idB) =>
{
try
{
if (idA == 3)
{
return(1);
}
else
{
return(-1);
}
}
catch (Exception)
{
return(0);
}
});
// Ausgabe
foreach (Schueler s in result1)
{
Console.WriteLine($"{s.Id}: {s.Vorname} {s.Nachame} ({s.Klasse})");
}
Console.WriteLine(result3);
Console.WriteLine(result4);
}