gives a list of transformation rules corresponding to all upvalues defined for the symbol f.
Details and Options
- You can specify the upvalues for f by making an assignment of the form UpValues[f]=list.
- The list returned by UpValues has elements of the form HoldPattern[lhs]:>rhs.
Examplesopen allclose all
Basic Examples (1)
Define upvalues for a symbol g:
These are the upvalues associated with g:
UpValues returns rules corresponding to upvalues defined for a symbol:
UpValues can be used to set the values directly:
Copy a symbol's definitions to another symbol:
Properties & Relations (3)
HoldPattern is used to protect the rules from their own definitions:
Definition and Information display upvalues but do not return them as values:
UpValues returns a value that can be used in a program:
Evaluation of an expression involves applying matching upvalues:
Introduced in 1991
Updated in 1996