stream-car[procedure] stream-car stream
[procedure] stream-cdr stream
SRFI-40: Returns car/cdr field of a stream pair stream.
See also stream-cons.
Examples:
(stream-car (stream 'a 'b 'c)) => a
(stream-car stream-null) => error
(stream-car 3) => error
(stream-cdr (stream 'a 'b 'c)) => (stream 'b 'c)
(stream-cdr stream-null) => error
(stream-cdr 3) => error
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