Collection Classes in D365Fo

 Hi guys, Today we see all the collection classes with examples.

• List
• Set 
• Map 
• Array
• Struct

List:

    Key words:

    myList.addEnd(string);//Adds value to end of the list myList.addStart(string);//Adds value to the beginning of the list myList.appendList(myList1);//Adds elements myList1 to the end of current list. myList.elements();//Returns the number of items in the list myList.getEnumerator();//This will returns an enumerator to get the values form list.   

    myList.toString();//This is convert list into string.

    
    Container = myList.pack();// Pack the list into a container

NewList = List::create(Container);// Create a new list from the packed list

List myList = con2List(Container);// Convert container

// Insert data into List

    List myList;

TempTable rmpLoc; myList = new List(Types::Record); for (tmpLoc = getFirstSelection(TmpTable_ds); tmpLoc ; tmpLoc = TmpTable_ds.getNext()) {     myList.addStart(iRBApprovalTmpLoc);

      // myList.addEnd(iRBApprovalTmpLoc);// add the data at end.     

}

myList.elements(); // return number of elements

  into list.

// Get data from List

    ListIterator:

    ListIterator literator = new ListIterator(myList);// my list

while (literator.more()) { tmpTable.data(literator.value()); }

    ListEnumerator: 

ListEnumerator enumerator = myList.getEnumerator();

while(enumerator.moveNext()) { iRBApprovalTmp.data(enumerator.current()); }

    
     Combine two lists into single list: 

    List myList        = new List(Types::String);

    List Newlist        = new List(Types::String);

    List combinedList   = new List(Types::String);

    

    combinedList = List::merge(myList, Newlist);

    print combinedList.toString();

Set:

    Key words:

        set    records = new set(Types::);

    records.add(value);// Add value to the set

    records.empty();// Check set is empty or not       

records.elements();//Returns the number of value in the set records.in(value);// it Checks the value is present in set or not. records.remove(value);// Remove the value from set. records.getEnumerator();// It getthe enumerator and will return the values i set.

    records.pack();//Convert into container. Set::difference(_set1, _set2);//Returns items that are in _set1 but are not in _set2 Set::intersection(_set1, _set2);// Duplicated values are returend. Set::union(_set1, _set2);//Combine the all the elements of _set1 and _set2

// Insert data into Set

    Set         records = new Set(Types::Int64);

    Notes       values;

    container   packed;

    ;

    

    records.add(tmpLoc.Recid);

    records.add(tmpLoc.Recid);

    

    // If you want conevert set to container 

    packed      = records.pack();

    values    = con2Str(packed, ',');// convert container to string

// Get data from Set

    SetIterator     recordsIterator;

    //recordsIterator = new SetIterator(

                            Set::create(packed));// If you using container we

                                                 //can follow like this

    recordsiterator = new setiterator(records);

    while (recordsiterator.more())

    {

        info(strfmt('%1',recordsiterator.value());

        recordsiterator.next();

    }

Map:

    Key Words;

       Map myMap = new Map(Types::Integer, Types::String);

myMap.remove(key);//Remove the value from map. myMap.elements();//Returns the number of key-value pairs in the map myMap.exists(key);//Returns true if _key is present in the map. myMap.insert(1,'Hi');// Insert record. myMap.lookup(Key);//Returns the corresponding value of _key.

// Insert data into Map

    Map myMap; myMap = new Map(Types::Integer, Types::String); myMap.insert(1, 'Test1'); myMap.insert(2, 'Test2'); myMap.insert(1, 'Test3');//Previous Test1 value overwritten with Test3.

// Get data from Map

    MapEnumerator   mapEnumerator;

    

    mapEnumerator = myMap.getEnumerator();

    while (mapEnumerator.moveNext()) 

    {

        info(strfmt("key %1 value %2",

            mapEnumerator.currentKey(),

            mapEnumerator.currentValue()));

    }

For struct and array check below link.

Collection Classes Ref link

Keep Daxing!!