Fundamentals of CS I (CS151 2001S) : Reference

eqv? - determine if two values are equivalent

Parametersval1, a value
val2, another value
PurposeDetermines if val1 and val2 are equivalent in some natural sense. Appropriate for many values, but not necessarily for lists or strings.
ProducesA truth value: true (#t) if the two values are equal in the given sense, false (#f) if they're not.
PreconditionsExactly two parameters (verified).
> (eqv? 2 2)
> (eqv? 2 2 2)
eqv?: expects 2 arguments, given 3: 2 2 2
> (eqv? 2 (+ 1 1))
> (eqv? "hello" "hello")
> (eqv? 'hello 'hello)
> (eqv? 'hello (car (list 'hello 'goodbye)))
> (eqv? null null)
> (eqv? (cons 'a null) (cons 'a null))
> (eqv? 5.0 5)
> (eqv? 5.0 5.0)

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