static void Main(string[] args)
{
List <Student> students = new List <Student>
{
new Student {
First = "Svetlana", Last = "Omelchenko", ID = 111, Scores = new List <int> {
97, 92, 81, 60
}, Age = 20
},
new Student {
First = "Claire", Last = "O'Donnell", ID = 112, Scores = new List <int> {
75, 84, 91, 39
}, Age = 21
},
new Student {
First = "Sven", Last = "Mortensen", ID = 113, Scores = new List <int> {
88, 94, 65, 91
}, Age = 22
},
new Student {
First = "Cesar", Last = "Garcia", ID = 114, Scores = new List <int> {
97, 89, 85, 82
}, Age = 23
},
new Student {
First = "Debra", Last = "Garcia", ID = 115, Scores = new List <int> {
35, 72, 91, 70
}, Age = 24
},
new Student {
First = "Fadi", Last = "Fakhouri", ID = 116, Scores = new List <int> {
99, 86, 90, 94
}, Age = 25
},
new Student {
First = "Hanying", Last = "Feng", ID = 117, Scores = new List <int> {
93, 92, 80, 87
}, Age = 32
},
new Student {
First = "Hugo", Last = "Garcia", ID = 118, Scores = new List <int> {
92, 90, 83, 78
}, Age = 42
},
new Student {
First = "Lance", Last = "Tucker", ID = 119, Scores = new List <int> {
68, 79, 88, 92
}, Age = 35
},
new Student {
First = "Terry", Last = "Adams", ID = 120, Scores = new List <int> {
99, 82, 81, 79
}, Age = 36
},
new Student {
First = "Eugene", Last = "Zabokritski", ID = 121, Scores = new List <int> {
96, 85, 91, 60
}, Age = 38
},
new Student {
First = "Eugenie", Last = "Zabok", ID = 123, Scores = new List <int> {
25, 28, 12, 15
}, Age = 31
},
new Student {
First = "Michael", Last = "Tucker", ID = 122, Scores = new List <int> {
94, 92, 91, 91
}, Age = 39
},
new Student {
First = "Claire", Last = "Bidet", ID = 124, Scores = new List <int> {
94, 92, 91, 91
}, Age = 42
},
new Student {
First = "Claire", Last = "Aragon", ID = 125, Scores = new List <int> {
94, 92, 91, 91
}, Age = 44
},
};
// methode old school
var notreSelection = new List <List <int> >();
foreach (var student in students)
{
if (student.ID > 116 && student.Last == "Garcia")
{
notreSelection.Add(student.Scores);
}
}
//methodes linq "objects"
List <Student> studentsSup116 = students.Where(s => s.ID > 116 && s.Last == "Garcia").ToList();
var studentsIds = students.Where(s => s.ID > 116 && s.Last == "Garcia").Select(s => s.Scores).ToList();
// methodes linq "sql like"
var resultLinqSqlLike = from s in students
where s.ID > 116 && s.Last == "Garcia"
select s.Scores;
resultLinqSqlLike.ToList();
// var resultStudentMean = from s in students
// select s.Scores.Average;
List <double> ScoreAverage = new List <double>();
foreach (var student in students)
{
var resultStudentAverage = student.Scores.Average();
ScoreAverage.Add(resultStudentAverage);
}
var StudentAverage = students.Select(s => s.Scores.Average()).ToList();
(int val1, string val2, bool val3)monTuple = (33, "toto", true);
var StudentIDAverage = students.Select(s => new { id = s.ID, name = s.First, moy = s.Scores.Average() }).ToList();
int studentId = StudentIDAverage[3].id;
//Récupérer les trois premiers étudiants qui ont la moyenne la plus grande avec leur moyenne
var studentList = students.Take(3).ToList();
var studentMean = students.OrderByDescending(s => s.Scores.Average()).Take(3).ToList();
var studentMeanList = students.Select(s => new { id = s.ID, name = s.First, moy = s.Scores.Average() }).OrderByDescending(x => x.moy).Take(3).ToList();
// les trois etudiants qui possedent les notes les plus basses
var studentWithMinScore = students.Select(s => new { id = s.ID, name = s.First, min = s.Scores.Min() }).OrderBy(x => x.min).Take(3).ToList();
// les trois premiers etudiants dans l'ordre alphabetique
var studentWithMinName = students.Select(s => new { id = s.ID, name = s.First, min = s.First.Min() }).OrderBy(x => x.min).Take(3).ToList();
// les etudiants par ordre alphabétique des prénoms
var studentWithName = students.OrderBy(x => x.First).ToList();
// classement par ordre alphabetique des prénoms puis des noms
var studentWithFisrtNameLastName = students.OrderBy(x => x.First).ThenBy(x => x.Last).ToList();
// nombre d'étudiant par tranche d'ages
//var studentListAge = students.Count(s => s.Age/10 * 10).ToList();
var studentAge = students.GroupBy(s => s.Age / 10 * 10).ToList();
// tous les etudiants qui sont trentenaires
var studentAge30 = students.GroupBy(s => s.Age / 10 * 10).Where(x => x.Key == 30).ToList();
var StudentMajor = students[3].IsMajorWithTuple();
Student student1 = new Student
{
First = "Mickael"
};
StudentStruct student2 = new StudentStruct
{
First = "Mickael"
};
FunctionParametersClass(student1);
FunctionParametersStruc(student2);
ColorEnum maCouleur = (ColorEnum)10;
}
static void FunctionParametersStruc(StudentStruct student)
{
student.First = "Toto";
}