Phobos git HEAD has a new range adaptor called groupBy that does whatyou want:assert([1,1,2,2,2,3,4,4].groupBy!((a)=>a).equal( [[1,1], [2,2,2], [3], [4,4]] )) T
Thanks! I wonder if this works with all input ranges. As I see it, every implementation will have to iterate the original range twice (if fully consumed). One iteration by the subranges and oneto move subrange range forward. It only skimmed the code, but I'd thought that would at least require forward ranges or a buffer.