Goops Manual (original) (raw)
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3.10.3 Instances
| class-of value | primitive procedure |
|---|
Return the GOOPS class of any Scheme value.
| instance? object | primitive procedure |
|---|
Return #t if object is any GOOPS instance, otherwise#f.
| is-a? object class | procedure |
|---|
Return #t if object is an instance of class or one of its subclasses.
Implementation notes: is-a? uses class-of andclass-precedence-list to obtain the class precedence list forobject.