On Monday, 29 April 2013 at 16:39:21 UTC, bearophile wrote:
I think there isn't something like that in Phobos (I can't be
fully sure because std.algorithm and std.range contain lot of
powerful stuff, and it's not easy to know every possible
combination of them).
So I think you should use zip.
Time ago I have suggested to add a second argument to chunks:
http://d.puremagic.com/issues/show_bug.cgi?id=6621
With that you can do something like:
auto arr = [1,2,3,4,5];
auto delta = arr.chunks(2, 1).map!(p => p[1] - p[0]);
Note that today this:
assert(equal(delta[], [1,1,1,1][]));
is written like this:
assert(equal(delta, [1,1,1,1]));
Or even:
assert(delta.equal([1,1,1,1]));
The online documentation is old.
Bye,
bearophile
Thanks. Sounds good.
