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A proxy list which purpose is to delay creation of its elements. In order to achieve that the items inserted are callable that return the actual elements. At any time a given number of elements are really instantiated (cached). Their choice is driven by this number and the L{current_index} in the list. They are chosen so that the item at L{current_index} and those around it are instantiated. Example: for 3 cached elements in a list of 10 with current_index = 4, the instantiated elements are the 3rd, 4th and 5th (3, 4, 5). @ivar current_index: index of the item currently selected @type current_index: int
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Inherited from Inherited from |
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