static void Main(string[] args)
{
DecimalAverage del1 = GetDecimalAverge;
// Data sources
int[] scores = { 90, 71, 82, 93, 75, 82 };
int[] scoreSet1 = { 73, 84, 62 };
int[] scoreSet2 = { 57, 99, 86 };
Memory <int> destinationArray = new int[100];
// Query Expression
IEnumerable <int> scoreQuery = //query variable
from score in scores //required
where score > 80 // optional
orderby score descending // optional
select score; //must end with select or group
// Execute the query to produce the results
//foreach (int testScore in scoreQuery)
//{
// Console.WriteLine(testScore);
//}
Func <int, bool> passing = (p => p >= 80); // All
IEnumerable <int> excellent = scores.Where(x => x >= 90);
var tester = scores;
var scores_Aggregate = scores.Aggregate((a, b) => a + b);
var scores_All = scores.All(passing);
var scores_Any = scores.Any();
var scores_Append = scores.Append(67);
var scores_AsEnumerable = scoreSet1.AsEnumerable();
var scores_AsMemory = scores.AsMemory();
var scores_AsParallel = scores.AsParallel();
var scores_AsQueryable = scores.AsQueryable();
var scores_AsSpan = scores.AsSpan();
var scores_Average1 = scores.Average();
var scores_Case = scores.Cast <decimal>();
var scores_Clone = scores.Clone();
var scores_Concatenate = scores.Concat(scoreSet1);
var scores_Contains = scores.Contains(79);
scores.CopyTo(destinationArray);
var scores_Count = scores.Count();
var scores_DefaultOrEmpty = scores.DefaultIfEmpty();
foreach (var item in scores_DefaultOrEmpty)
{
Console.WriteLine(item);
}
}
static void Main(string[] args)
{
// Data sources
string[] names = { "John", "Jack", "joe", "Jeff", "JOHNNY", "Julie", "Jessica", "Jacky", "JILL" };
int[] scores = { 90, 71, 82, 93, 75, 82, 75, 75, 75 };
int[] scoreSet1 = { 73, 84, 62 };
int[] scoreSet2 = { 57, 99, 86 };
var scoresCopy = scores;
Memory <int> destinationArray = new int[100];
List <Student> studentList = new() // Use this list for the GroupJoin
{
new Student()
{
StudentID = 1, StudentName = "John", StandardID = 1
},
new Student()
{
StudentID = 2, StudentName = "Moin", StandardID = 1
},
new Student()
{
StudentID = 3, StudentName = "Bill", StandardID = 2
},
new Student()
{
StudentID = 4, StudentName = "Ram", StandardID = 2
},
new Student()
{
StudentID = 5, StudentName = "Ron"
}
};
var standardList = new List <Standard>() // Use this list for the GroupJoin
{
new Standard()
{
StandardID = 1, StandardName = "Standard 1"
},
new Standard()
{
StandardID = 2, StandardName = "Standard 2"
},
new Standard()
{
StandardID = 3, StandardName = "Standard 3"
}
};
// Query Expression
IEnumerable <int> scoreQuery = //query variable
from score in scores //required
where score > 80 // optional
orderby score descending // optional
select score; //must end with select or group
// Execute the query to produce the results
//foreach (int testScore in scoreQuery)
//{
// Console.WriteLine(testScore);
//}
DecimalAverage del1 = GetDecimalAverge; // Delegate
Func <int, bool> passing = (p => p >= 80); // Func
Action <int[]> avg = x => Math.Floor(x.Average()); // Action
Predicate <int[]> failed = x => x.Average() > 65; // Predicate
var excellent = scores.Where(x => x >= 90);
var seventyFives = scores.Where(x => x == 75);
var tester = scores;
var scores_Aggregate = scores.Aggregate((a, b) => a + b);
var scores_All = scores.All(p => p >= 80);
var scores_Any = scores.Any();
var scores_Append = scores.Append(67);
var scores_AsEnumerable = scoreSet1.AsEnumerable();
var scores_AsMemory = scores.AsMemory();
var scores_AsParallel = scores.AsParallel();
var scores_AsQueryable = scores.AsQueryable();
var scores_AsSpan = scores.AsSpan();
var scores_Average1 = scores.Average();
var scores_Case = scores.Cast <decimal>();
var scores_Clone = scores.Clone();
var scores_Concatenate = scores.Concat(scoreSet1);
var scores_Contains = scores.Contains(79);
scores.CopyTo(destinationArray);
var scores_Count = scores.Count();
var scores_DefaultOrEmpty = scores.DefaultIfEmpty();
var scores_Distinct = scores.Distinct();
var scores_ElementAt = scores.ElementAt(3); // will throw exception
var scores_ElementAtOrDefault = scores.ElementAtOrDefault(3);
var scores_Equals = scores.Equals(scoresCopy);
var scores_Except = scores.Except(seventyFives);
var scores_First = scores.First();
var scores_FirstOrDefault = scores.FirstOrDefault();
#region var scores_GroupBy = scores.GroupBy(x => x);
var scores_GroupBy = scores.GroupBy(x => x);
//foreach (var score in scores_GroupBy)
//{
// foreach (var x in score)
// {
// Console.WriteLine(x);
// }
// Console.WriteLine();
//}
#endregion
#region var scores_GroupJoin = standardList.GroupJoin(studentList...)
var scores_GroupJoin = standardList.GroupJoin(studentList,
standard => standard.StandardID,
student => student.StandardID,
(standard, studentGroup) => new
{
StudentGroup = studentGroup,
StandardFullName = standard.StandardName
});
//foreach (var x in scores_GroupJoin)
//{
// Console.WriteLine(x.StandardFullName);
// foreach (var y in x.StudentGroup)
// {
// Console.WriteLine(y.StudentName);
// }
//}
#endregion
var scores_Intersect = scores.Intersect(scoreSet1);
#region var scores_Join = studentList.Join(standardList...)
var scores_Join = studentList.Join(standardList,
stud => stud.StudentID,
stand => stand.StandardID,
(stud, stand) => stud);
foreach (var student in scores_Join)
{
Console.WriteLine($"{student.StudentName} {student.StudentID}");
}
#endregion
// TODO: Finish the rest of the LINQ Methods similar to above
}
}
