On Saturday, 6 October 2018 at 13:17:22 UTC, bauss wrote:
Let's say you have a range with struct, but some of the struct
are duplicates of each other.
Is there a standard function in Phobos to remove duplicates?
My first thought was "uniq", but it can't really do it like
that, but it doesn't work.
See: https://run.dlang.io/is/IcFEtw
Is there another function in Phobos that perhaps would work?
I can of course write my own function, but if there is a
standard function that can do it, then I'd rather use that.
Unless you want to implement opCmp() and do the .sort.uniq then,
you may find this one-liner helpful:
randomAccessRange.fold!((arr, elem) => arr.canFind(elem) ? arr :
(arr ~= elem))((ElementType!(typeof(randomAccessRange))[]).init)
Applied in your example: https://run.dlang.io/is/3KjRvY
But yes, it is de facto a custom function. I don't think that
there is a function in Phobos that will perfectly deduplicate
your range without having it sorted before.
