http://d.puremagic.com/issues/show_bug.cgi?id=6621
Summary: Superimposition amount for std.range.chunks
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P2
Component: Phobos
AssignedTo: nob...@puremagic.com
ReportedBy: bearophile_h...@eml.cc
--- Comment #0 from bearophile_h...@eml.cc 2011-09-08 00:29:12 PDT ---
std.range.chunks is quite useful. For it a rather useful third optional
argument (that defaults to 0) is how many items are repeated from the precedent
chunk:
auto data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
chunks(data, 3, 0) ==> (default, as now)
[[1, 2, 3], [4, 5, 6], [7, 8, 9], [10]]
chunks(data, 3, 1) ==>
[[1, 2, 3], [3, 4, 5], [5, 6, 7], [7, 8, 9], [9, 10]]
chunks(data, 3, 2) ==>
[[1, 2, 3], [2, 3, 4], [3, 4, 5], [4, 5, 6], [5, 6, 7], [6, 7, 8], [7, 8, 9],
[8, 9, 10]]
In Python I use now and then a lazy generator with such extra argument.
The third argument can't be higher than the second (if they are equal it's like
cycle on a slice).
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