>> It seems following is invalid:
>>
>>    (let ((a 2))
>>         (define (foo x) (+ a x)))
>>
>> I prefer to reduce scope of variable as much as possible, so
>> I find this restriction unconvinent. Is is part of standard or technical
>> limitation? Is it any workaround?
>
> Section '3.4.7 Example 2: A Shared Persistent Variable' is probably what you want?
Yes, although it is a bit too verbose.
(define (foo x)
        (let ((a 2))
             (+ a x0)))
is enough for my puroses, although solution about define-values seems
intresting. Thanks all!

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Best regards, Dmitry Bogatov <KAction@gnu.org>,
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