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@node SRFI 41 Utilities
@section SRFI 41 Utilities
Extra utilities for handling streams. Provided by @code{(srfi srfi-41
util)}.
@defun stream-car+cdr stream
Returns the car and cdr of stream.
@end defun
@defun interleave-streams < streams
Merges a number of totally ordered streams into a single
totally ordered stream.
((≺, stream)) → (≺, stream)
@end defun
@defun stream-insert < item stream
Insert item in the totally ordered stream (≺, stream).
@end defun
@defun filter-sorted-stream pred stream
@end defun
@defun filter-sorted-stream* pred keep-remaining? stream
@end defun
@defun get-stream-interval start-pred end-pred stream
Get the substream from stream from the first match of start-pred, to
the first match of end-pred after start-pred.
@end defun
@defun stream-find pred stream
Find the first element in stream satisfying the predicate, or #f none
was found.
@end defun
@defun stream-remove pred stream
Stream-filter, but with predicate negated.
@end defun
@defun stream->values stream
Equivalent to list->values. Returns as many objects as the stream is long.
@end defun
@defun repeating-naturals from repeats
Natural numbers from @var{from} and up, but each repeated @var{repeat}
times.
@example
(stream->list 15 (repeating-naturals 1 3))
⇒ (1 1 1 2 2 2 3 3 3 4 4 4 5 5 5)
@end example
@end defun
@defun stream-partition pred stream
@end defun
@defun stream-split idx stream
@end defun
@defun stream-paginate stream [page-size=10]
@end defun
@defun eager-stream-cons a b
stream cons, but eval arguments beforehand.
@end defun
@defun stream-timeslice-limit stream timeslice
Wrap a stream in time limits. Each element has at most @var{timeslice}
seconds to produce a value, otherwise the stream ends. Useful for finding the
``final'' element matching a predicate in an infinite stream.
@end defun
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