NULL is used when nothing is associated with a given key. Consequently, associating NULL with a key is the same thing as removing it from the collection.

The size of the internal hash table grows dynamically as data is inserted.

This class is creatable.

This class acts like a read / write array.

This class is enumerable with the FOR EACH keyword.

Properties

Count	Returns the number of elements stored in the collection.
Default	Return or set the collection default value that is returned when no value is associated with a key.
Empty	Return if the collection is empty.
First	Returns the key of the first element inserted in the collection, or NULL if the collection is void.
Key	Returns the key of the last read or last enumerated element.
Keys	Return a string array of all collection keys.
Last	Returns the key of the last element inserted in the collection, or NULL if the collection is void.
Length	Returns the number of elements stored in the collection.

Methods

Add	Adds an element to the collection.
Clear	Clears the collection.
Copy	Returns a copy of the collection.
Exist	Returns if something is associated with this key in the collection.
Remove	Removes an element from the collection.

Example

PUBLIC SUB Main() DIM cAbbr2Weekday AS Collection = ["mo": "Monday", "tu": "Tuesday", "we": "Wednesday", "th": "Thursday", "fr": "Friday", "sa": "Saturday", "su": "Sunday"] DIM cCopy AS Collection DIM sAbbr AS String ' To access the data PRINT cAbbr2Weekday["fr"] ' Print mapping key to value FOR EACH sAbbr IN cAbbr2Weekday PRINT cAbbr2Weekday.Key & " --> " & sAbbr NEXT ' Lenght/Count return both 7 PRINT cAbbr2Weekday.Count PRINT cAbbr2Weekday.Length ' Add element and remove it again cAbbr2Weekday.Add("sat", "Saturday") cAbbr2Weekday.Remove("sat") ' Test if a key is present PRINT cAbbr2Weekday.Exist("we") ' Make a copy and clear the original collection cCopy = cAbbr2Weekday.Copy() cAbbr2Weekday.Clear() END