Item (NamedArraylist property)

Value of named item (NamedArraylist class)

Item is a ReadWrite property returns or sets the value of the item that has the given name in the NamedArraylist.

For additional comments about the Item method in collections, see "Coding considerations for collections".

Syntax

%currentItem = nal:Item( string) nal:Item( string) = newItem Throws ItemNotPresent

Syntax terms

%currentItem	A variable of the same type as specified on the nal declaration to contain the value of the specified nal item.
nal	A NamedArraylist object.
string	A string that serves as a subscript to identify a nal item.
newItem	A variable or value of the same type as specified on the nal declaration to be assigned to the specified nal item.

Usage notes

• If the Item property is being set and there is already an item on the NamedArraylist that has the specified name, that item is replaced. If the Item property is being set and there is no item on the NamedArraylist that has the indicated name, the item is added. If the Item property is being retrieved and there is no item on the NamedArraylist that has the indicated name, the result is one of the following actions:
  • The request is cancelled if the UseDefault property value is False.
  • The Default value is returned if the UseDefault property is True.

  Regardless of the value of UseDefault, the presence of the item with the indicated name can be checked using the Number function, for example:

  %num = %myLis:number(%key) if %num then %name = %myLis:itemByNumber(%num) ...

• The Item keyword is not required. For example, in the request at the start of the NamedArraylist class, %alist('Idle') = 'Eric', for instance, is equivalent to:

  %alist:Item('Idle') = 'Eric'

• As shown in the example at the start of the NamedArraylist class, NamedArraylist items are ordered alphabetically by their names. Accordingly, the Item method takes a name argument string.

See also

• The ItemByNumber method, lets you retrieve or set an item using its item number.

Arraylist class FloatNamedArraylist class NamedArraylist class UnicodeNamedArraylist class	List of Arraylist methods List of FloatNamedArraylist methods List of NamedArraylist methods List of UnicodeNamedArraylist methods List of Collection methods	Arraylist methods syntax FloatNamedArraylist methods syntax NamedArraylist methods syntax UnicodeNamedArraylist methods syntax
Notation conventions for methods