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cache
Combined from primary sources listed below.

In role PositionalBindFailover§

See primary documentation in context for method cache 

method cache(PositionalBindFailover:D: --> List:D)

Returns a List based on the iterator method, and caches it. Subsequent calls to cache always return the same List object.

In Any§

See primary documentation in context for method cache 

method cache()

Provides a List representation of the object itself, calling the method list on the instance.