public void AddUsers(Users users)
{
UsersItems.Add(users);
ListBoxUsers.Items.Add(users.CxListBoxItem);
var bindImg = new BindingImage();
ListArrow.Add(bindImg);
}
protected override void InitialiseArrow()
{
arrow = ListArrow.OrderBy((Person a, Person b) => b.Age - a.Age).Map((Person p) =>
{
return(new Person {
Name = p.Name + " mapped", Age = p.Age + 1, Employer = p.Employer
});
});
}
public static ListArrow <A, C> Map <A, B, C>(this ListArrow <A, B> listArrow, Func <B, C> transformation)
{
/*
* Append a MapArrow to the end of the supplied ListArrow using the transformation Func
* passed in.
*/
MapArrow <B, C> mapArrow = ListArrow.Map(transformation);
return(listArrow.Combine(mapArrow));
}
public static ListArrow <A, B> Filter <A, B>(this ListArrow <A, B> listArrow, Func <B, bool> predicate)
{
/*
* Append a FilterArrow to the end of the supplied ListArrow using the predicate passed
* in.
*/
FilterArrow <B> filterArrow = ListArrow.Filter(predicate);
return(listArrow.Combine(filterArrow));
}
static void Main(string[] args)
{
Database data = new Database();
ordersFromMicrosoft = new ListOutput();
ordersToCambridge = new ListOutput();
bulkOrders = new ListOutput();
averageOrdersToScotland = new IntOutput();
BindingsManager.CreateBinding(
data.GetBindPoint("orders"),
ListArrow.Filter((Order x) => x.Supplier.Name == "Microsoft")
.OrderBy((Order x, Order y) => x.Customer.Name.CompareTo(y.Customer.Name)),
ordersFromMicrosoft.GetBindPoint("Orders"));
BindingsManager.CreateBinding(
data.GetBindPoint("orders"),
ListArrow.Filter((Order x) => x.Customer.Location == "Cambridge")
.OrderBy((Order x, Order y) => x.Customer.Name.CompareTo(y.Customer.Name)),
ordersToCambridge.GetBindPoint("Orders"));
BindingsManager.CreateBinding(
data.GetBindPoint("orders"),
ListArrow.Filter((Order x) => x.Volume > 30)
.OrderBy((Order x, Order y) => x.Customer.Name.CompareTo(y.Customer.Name)),
bulkOrders.GetBindPoint("Orders"));
var averagingArrow = Op.Split <IEnumerable <int> >()
.Combine(Op.And(
ListArrow.Foldl((int x, int y) => x + y, 0),
ListArrow.Foldl((int x, int y) => x + 1, 0)))
.Unsplit((int total, int count) => total / count);
BindingsManager.CreateBinding(
data.GetBindPoint("orders"),
ListArrow.Filter((Order x) => x.Customer.Location == "Glasgow" || x.Customer.Location == "Aberdeen")
.Map((Order x) => x.Volume)
.Combine(averagingArrow),
averageOrdersToScotland.GetBindPoint("Result"));
data.Initialise();
PrintOutput("Orders from Microsoft", ordersFromMicrosoft);
PrintOutput("Orders to Cambridge", ordersToCambridge);
PrintOutput("Bulk orders", bulkOrders);
Console.WriteLine("Average orders to Scotland: {0}", averageOrdersToScotland.Result);
Console.WriteLine();
IncreaseMoragsOrder(data);
MoveBrendaToCambridge(data);
MicrosoftTakeover(data);
}
public static ListArrow <A, C> Combine <A, B, C>(this ListArrow <A, B> a1, ListArrow <B, C> a2)
{
/*
* Combine arrows end-to-end. This is an overloaded version of the normal Arrow.Combine
* method used to prevent ListArrows being prematurely converted into arrows between
* IEnumerables.
*/
ListArrow <A, C> result = new ListArrow <A, C>(
x => a2.Invoke(a1.Invoke(x))
);
return(result);
}
protected override void InitialiseArrow()
{
Arrow<IEnumerable<Person>, Person> tempArrow = ListArrow.Foldl((Person a, Person b) =>
new Person
{
Age = a.Age + b.Age,
Name = String.Format("{0} and {1}", a.Name, b.Name),
Employer = a.Employer
},
new Person
{
Name = "",
Age = 0,
Employer = new Employer { Name = "Employer", Size = 10 }
});
arrow = new ListArrow<Person, Person>(
x => new List<Person> {tempArrow.Invoke(x)});
}
public static void DemoListArrows()
{
List <String> cities = new List <String> {
"London",
"Edinburgh",
"Newcastle",
"Manchester",
"Glasgow",
"Cambridge"
};
ListArrow <String, String> sorter = ListArrow.Map((String x) => Tuple.Create(x, x.Length))
.Combine(ListArrow.OrderBy <Tuple <String, int> >((s1, s2) => s1.Item2 - s2.Item2)
.Combine(ListArrow.Map((Tuple <String, int> x) => x.Item1)))
.Combine(ListArrow.Filter((String x) => x.IndexOf('E') != 0));
var result = sorter.Invoke(cities);
foreach (var s in result)
{
Console.WriteLine(s);
}
Console.WriteLine();
ListArrow <String, String> cityArrow =
ListArrow.Map((String city) => Tuple.Create(city, city.Length))
.Filter((Tuple <String, int> cityTuple) => cityTuple.Item2 > 7)
.Map((Tuple <String, int> cityTuple) => cityTuple.Item1)
.Filter((String city) => city != "Manchester")
.OrderBy((String c1, String c2) => c1.CompareTo(c2));
result = cityArrow.Invoke(cities);
foreach (var s in result)
{
Console.WriteLine(s);
}
}
protected override void InitialiseArrow()
{
Arrow <IEnumerable <Person>, Person> tempArrow = ListArrow.Foldl((Person a, Person b) =>
new Person
{
Age = a.Age + b.Age,
Name = String.Format("{0} and {1}", a.Name, b.Name),
Employer = a.Employer
},
new Person
{
Name = "",
Age = 0,
Employer = new Employer {
Name = "Employer", Size = 10
}
});
arrow = new ListArrow <Person, Person>(
x => new List <Person> {
tempArrow.Invoke(x)
});
}
protected override void InitialiseArrow()
{
arrow = ListArrow.Filter((Person p) => p.Age > 10);
}
public void InitialiseArrow()
{
arrow = ListArrow.Filter <Order>((Order o) => o.Volume > 1)
.Map((Order o) => String.Format("Order from {0} in {1} for {2} {3}s from {4}", o.Customer.Name, o.Customer.Location, o.Volume, o.Product, o.Supplier.Name));
}
public void InitialiseArrow()
{
arrow = ListArrow.Filter<Order>((Order o) => o.Volume > 1)
.Map((Order o) => String.Format("Order from {0} in {1} for {2} {3}s from {4}", o.Customer.Name, o.Customer.Location, o.Volume, o.Product, o.Supplier.Name));
}
public static Arrow <IEnumerable <A>, B> Foldr <A, B>(this ListArrow <A, B> listArrow, Func <B, B, B> fold, B zero)
{
Arrow <IEnumerable <B>, B> foldArrow = ListArrow.Foldl(fold, zero);
return(listArrow.Combine(foldArrow));
}
public static ListArrow <A, B> Reverse <A, B>(this ListArrow <A, B> listArrow)
{
ReverseArrow <B> reverseArrow = ListArrow.Reverse <B>();
return(listArrow.Combine(reverseArrow));
}
public static ListArrow <A, B> OrderBy <A, B>(this ListArrow <A, B> listArrow, Func <B, B, int> comparer)
{
OrderByArrow <B> orderByArrow = ListArrow.OrderBy(comparer);
return(listArrow.Combine(orderByArrow));
}
