updates the definition of operators.
Operators give the possibility to write compound terms with
arity 1 or 2 in operator notation (as prefix, suffix resp. infix operators).
This allows a better readability.
The priority of an operator is defined by Priority. An operator
can be deleted by giving him the priority 0.
Type defines the type of Operator. The possible types are:
| fx | prefix | not associative |
|---|---|---|
| fy | prefix | right-associative |
| xf | postfix | not associative |
| yf | postfix | left-associative |
| xfx | infix | not associative |
| xfy | infix | right-associative |
| yfx | infix | left-associative |
If Operators is a list of operators, its definition or deleting will be made in the given order.
Priority integer between 0 and ... Type atom (xf | yf | fx | fy | xfx | xfy | yfx) Operator atom
| op(75, xfx, @@). | Succeeds. @@ is now a non-associative infix operator with priority 75. |
| op(80, xfx, @@). | Succeeds. @@ is now a non-associative infix operator with priority 80. |
This predicate is part of the ISO-Prolog Standard.
| scroll to top |
|