The R7RS (Section 6.9) defines a set of bytevector manipulation procedures, accessible with
(use-modules (scheme base))
bytevector-u8-set! have the same
definition as in R6RS. The procedures listed below either have a
different definition in R7RS and R6RS, or are not defined in R6RS.
Return a newly allocated bytevector composed of the given arguments.
(bytevector 2 3 4) ⇒ #vu8(2 3 4)
Returns a newly allocated bytevector containing the elements of bv in the range [start ... end). start defaults to 0 and end defaults to the length of bv.
(define bv #vu8(0 1 2 3 4 5)) (bytevector-copy bv) ⇒ #vu8(0 1 2 3 4 5) (bytevector-copy bv 2) ⇒ #vu8(2 3 4 5) (bytevector-copy bv 2 4) ⇒ #vu8(2 3)
See also the R6RS version.
Copy the block of elements from bytevector src in the range [start ... end) into bytevector dst, starting at position at. start defaults to 0 and end defaults to the length of src. It is an error for dst to have a length less than at + (end - start).
See also the R6RS version. With
(use-modules ((rnrs bytevectors) #:prefix r6:) ((scheme base) #:prefix r7:))
the following calls are equivalent:
(r6:bytevector-copy! source source-start target target-start len) (r7:bytevector-copy! target target-start source source-start (+ source-start len))
Return a newly allocated bytevector whose characters form the concatenation of the given bytevectors arg ...
(bytevector-append #vu8(0 1 2) #vu8(3 4 5)) ⇒ #vu8(0 1 2 3 4 5)