<stretchy-collection>

The class of collections that may grow or shrinking to accommodate adding or removing elements.

Stretchy collections allow element-setter to be called with a key that is not present in the collection, expanding the collection as necessary to add a new element in that case.  Each concrete subclass of <stretchy-collection> must provide or inherit a method for element-setter the behaves as follows when there is not already an element present for the indicated key:

• If the class is a subclass of <explicit-key-collection>, adds a new element to the collection with the indicated key.
• If the class is a subclass of <sequence>, first calls size-setter on the key + 1 and the collection to expand the sequence.  The key must be a non-negative integer.

Exported from

• Module common-dylan
• Module Dylan

Modifiers

abstract free open

Superclasses

• <collection>

Subclasses

• <SDE-vector>
• <self-organizing-list>
• <stretchy-sequence>
• <table>