static void Main(string[] args)
{
//5,6,7,8,9
VectorList<User> Users = new VectorList<User>(5);
Users.elements[0] = new User { Id = 1, Name = "John", Phone = "1234567", Age = 20 };
Users.elements[1] = new User { Id = 2, Name = "Jane", Phone = "4365745674", Age = 40 };
Users.elements[2] = new User { Id = 3, Name = "Max", Phone = "34563546", Age = 60 };
Users.elements[3] = new User { Id = 4, Name = "Eva", Phone = "96798", Age = 80 };
Users.elements[4] = new User { Id = 5, Name = "Mickel", Phone = "3245", Age = 100 };
var temp = Users.Select(x=>x.Age>30 && x.Age<100).Select(x=>
{
string newname = x.Name = " " + x.Age;
return new { Name = newname, Age = x.Age };
}).Select(x => x.Name);
double maxage = Users.max(x => x.Age)
}
public VectorList <Tunknown> Select <Tunknown>(Func <T, Tunknown> f)
{
VectorList <Tunknown> tu = new VectorList <Tunknown>(this.Length);
for (int i = 0; i < this.Length; i++)
{
tu[i] = f(this[i]);
}
return(tu);
}
public VectorList<TResult> Select(Func<T, TResult> f)
{
VectorList<TResult> outlist = new VectorList<TResult>(elements.Length);
for(int i=0;i<elements.Length;i++)
{
outlist.elements[i] = f(elements[i]);
}
return outlist;
}
public VectorList <T> Where(Func <T, bool> f)
{
int[] selected = new int[Length];
int count = 0;
for (int i = 0; i < Length; i++)
{
if (f(this[i]))
{
selected[count] = i;
count++;
}
}
VectorList <T> res = new VectorList <T>(count);
for (int i = 0; i < count; i++)
{
res[i] = this[selected[i]];
}
return(res);
}
public VectorList<T> Where(Func<T,bool> filter)
{
int[] appr = new int[elements.Length];
int counter = 0;
for(int i=0;i<elements.Length; i++)
{
if(filter(elements[i]))
{
appr[counter] = i;
counter++;
}
}
VectorList<T> t = new VectorList<T>(counter);
for (int i = 0; i < counter; i++)
{
res.elements[i] = elements[appr[i]];
}
return null;
}
static void Main(string[] args)
{
VectorList <User> Users = new VectorList <User>(5);
Users[0] = new User {
Id = 1, Name = "John", Phone = "1234567", Age = 20
};
Users[1] = new User {
Id = 2, Name = "Jane", Phone = "4365745674", Age = 40
};
Users[2] = new User {
Id = 3, Name = "Max", Phone = "34563546", Age = 60
};
Users[3] = new User {
Id = 4, Name = "Eva", Phone = "96798", Age = 80
};
Users[4] = new User {
Id = 5, Name = "Mickel", Phone = "3245", Age = 100
};
var tu1 = Users.Select(x => new { User = x.Name, Phone = long.Parse(x.Phone) });
var olds = Users.Where(x => x.Age > 40).Where(x => x.Age < 80).Select(x => new { User = x.Name, Phone = long.Parse(x.Phone) });
}