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Add an example of how to use in-indexed

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Jack Firth 2020-12-04 18:16:58 -08:00 committed by Matthew Flatt
parent ad284de366
commit 5cedca2183
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pkgs/racket-doc/scribblings/reference/sequences.scrbl
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@ -604,6 +604,11 @@ each element in the sequence.
produced by @racket[seq], and a non-negative exact integer starting produced by @racket[seq], and a non-negative exact integer starting
with @racket[0]. The elements of @racket[seq] must be with @racket[0]. The elements of @racket[seq] must be
single-valued. single-valued.
@(examples
#:eval sequence-evaluator
(for ([(i ch) (in-indexed "hello")])
(printf "The char at position ~a is: ~a\n" i ch)))
} }
@defproc[(in-sequences [seq sequence?] ...) sequence?]{ @defproc[(in-sequences [seq sequence?] ...) sequence?]{