return a sequence of the permanent indices - Maple Help

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Cache[PermanentIndices] - return a sequence of the permanent indices

Calling Sequence

PermanentIndices( cache )

Parameters

cache

-

cache table or procedure: the object whose indices (keys) are to be returned

Description

• 

The PermanentIndices command returns the indices of the permanent entries of the given cache table.  The cache table can be given directly as cache, or cache can refer to a procedure that has, or can have, a cache remember table.  If such a procedure is given and it has a cache remember table, the keys of the permanent indices from that table are returned.  If the procedure does not have a table, NULL is returned.

• 

PermanentIndices returns the indices in the same format as indices, that is, a sequence of lists where the contents of each list is an index of a permanent entry from the table.

• 

The PermanentEntries command can be used to get the indices of the permanent entries.

• 

For more information on cache tables, see Cache Package.

Examples

c1:=Cache

c1:=Cache512

(1)

Cache:-AddPermanentc1,x,y

Cache:-AddPermanentc1,y,z

Cache:-PermanentEntriesc1

z,y

(2)

Cache:-PermanentIndicesc1

y,x

(3)

p := proc( x ) option cache; x^2; end proc;

p:=procxoptioncache;x^2end proc

(4)

Cache:-AddPermanentp,2,2

Cache:-AddPermanentp,3,3

Cache:-PermanentEntriesp

2,3

(5)

Cache:-PermanentIndicesp

2,3

(6)

See Also

Cache Package, Cache[AddPermanent], Cache[PermanentEntries], Cache[RemovePermanent], Cache[TemporaryEntries], Cache[TemporaryIndices]


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