return a sequence of the permanent indices
PermanentIndices( cache )
cache table or procedure: the object whose indices (keys) are to be returned
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.
c1 ≔ Cache⁡
c1 ≔ Cache⁡512
p := proc( x ) option cache; x^2; end proc;
p ≔ procxoptioncache;x^2end proc
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