Show/Hide Toolbars

XSharp

Object Initializers allow you to instantiate an object and assign values to its properties in one line of code.
The example below uses object initializers to set the FirstName and LastName property of the Person object

 

USING System
USING System.Collections.Generic
USING System.Linq
USING System.Text
 
  FUNCTION Start() AS VOID
    LOCAL oList AS List<Int>
    // The next line creates the collection and adds 5 elements
    // Note the double curly braces:
    // The first pair calls the default constructor of the List<> Class
    // The second pair of curly braces surrounds the list of values
     Console.WriteLine("Collection Initializers")
     oList := List<Int>{} {1,2,3,4,5}
    FOREACH VAR i IN oLIst
        Console.WriteLine(i)
    NEXT
    VAR oCompass := List<String>{}{"North", "East", "South", "West"}
    FOREACH VAR sDirection in oCompass
        Console.WriteLine(sDirection)
    NEXT
     Console.ReadLine()
    // Now an example of an Object Initializer
    // Note that the object has no constructor
    // We are assigning the values directly to the properties
    // This will only work if there are public properties
    // Again there are double curly braces:
    // The first pair calls the default constructor of the Person class
    // The second pair of curly braces surrounds the list of name-value pairs
 
     Console.WriteLine("Object Initializer")
    VAR oPerson := Person{}{FirstName := "John", LastName := "Smith"}
     ? oPerson:Name
     Console.ReadLine()
    // Combine the two
    Var oPeople := List<Person> {} {;
                                Person{}{FirstName := "John", LastName := "Smith"}, ;
                                Person{}{FirstName := "Jane", LastName := "Doe"} ;
                             }
     Console.WriteLine("Collection and Object Initializers")                    
    FOREACH var oP in oPeople
        Console.WriteLine(oP:Name)
    NEXT
     Console.ReadLine()        
    RETURN
 
PUBLIC CLASS Person
  PROPERTY FirstName AS STRING AUTO
  PROPERTY LastName   AS STRING AUTO
  PROPERTY Name     AS STRING GET FirstName+" "+LastName
END CLASS