Return the value of this attribute for node t, raising an error if
it depends on itself.
Return the value of this attribute for node t, raising an error if
it depends on itself.
Has the value of this attribute at t already been computed for arg
or not?
Has the value of this attribute at t already been computed or not?
By default, does the memo table contain a value for t?
Has the value of this attribute at t already been computed or not?
By default, does the memo table contain a value for t?
The memo table as a mutable hash map.
The memo table as a mutable hash map.
Immediately reset the memo table.
Immediately reset the memo table.
Check to see if a reset has been requested via the common memo version, and if so, do it.
Check to see if a reset has been requested via the common memo version, and if so, do it.
A variation of the
CachedAttributeclass for parameterised attributes.