getMosKeyAncestor?

Function: getMosKeyAncestor? { key slot -> nil-or-t val }

file: job.t
package: muf
status: alpha

The getMosKeyAncestor? prim returns the contents of ancestor slot slot in mosKey instance key -- the return value is the slot-th class in the precedence list for key -- together with a t success flag, if such an ancestor exists, else a nil success flag and undefined value.

See section getMosKeyAncestor. See section setMosKeyAncestor.

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