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in-pairs
in-sequence-forever
sequence-lift
7.1

25 Sequences

NOTE: This library is deprecated; use racket/sequence, instead. The contents of this module, with the exceptions below, have been merged with racket/sequence.

 (require unstable/sequence) package: unstable-lib

procedure

(in-pairs seq)  sequence?

  seq : sequence?
Produces a sequence equivalent to (in-parallel (sequence-lift car seq) (sequence-lift cdr seq)).

procedure

(in-sequence-forever seq val)  sequence?

  seq : sequence?
  val : any/c
Produces a sequence whose values are the elements of seq, followed by val repeated.

procedure

(sequence-lift f seq)  sequence?

  f : procedure?
  seq : sequence?
Produces the sequence of f applied to each element of seq.

Example:
> (for/list ([x (sequence-lift add1 (in-range 10))])
    x)

'(1 2 3 4 5 6 7 8 9 10)