- iset-find predicate iset failureprocedure
Returns the smallest element of iset that satisfies predicate, or the result of invoking failure with no arguments if there is none.
Examples:
(iset-find positive? (iset -1 1) (lambda () #f)) ⇒ 1 (iset-find zero? (iset -1 1) (lambda () #f)) ⇒ #f