Class Sloane

                      object --+    
                               |    
structure.sage_object.SageObject --+
                                   |
                                  Sloane

A collection of Sloane generating functions.

This class inspects sage.combinat.sloane_functions, accumulating all the SloaneSequence classes starting with 'A'.  These are listed for tab completion, but not instantiated until requested.

EXAMPLES:
    Ensure we have lots of entries:
    sage: len(sloane.trait_names()) > 100
    True

    And ensure none are being incorrectly returned:
    sage: [ None for n in sloane.trait_names() if not n.startswith('A') ]
    []

    Ensure we can access dynamic constructions and cache correctly:
    sage: s = sloane.A000587
    sage: s is sloane.A000587
    True

    And that we can access other functions in parent classes:
    sage: sloane.__class__
    <class 'sage.combinat.sloane_functions.Sloane'>

AUTHOR: Nick Alexander

List Sloane generating functions for tab-completion.

The member classes are inspected from module sage.combinat.sloane_functions.

They must be sub classes of SloaneSequence and must start with 'A'.  These
restrictions are only to prevent typos, incorrect inspecting, etc.

EXAMPLES:
    sage: type(sloane.trait_names())
    <type 'list'>

Construct and cache unique instances of Sloane generating function objects
.

EXAMPLES:
    sage: sloane.__getattribute__('A000001')
    Number of groups of order n.
    sage: sloane.__getattribute__('dog')
    Traceback (most recent call last):
    ...
    AttributeError: dog