https://issues.dlang.org/show_bug.cgi?id=17742
Steven Schveighoffer <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from Steven Schveighoffer <[email protected]> --- Vladimir, would appreciate your input on the PR: https://github.com/dlang/phobos/pull/5805 Currently, transposed uses `filter` to remove elements from the range transposition when the underlying column has become empty. So for instance: assert([[1,2,3], [4,5], [6,7,8]].transposed.equal([[1,4,6], [2,5,7], [3,8]]); Note the jaggedness of the range of ranges changes in weird ways, especially when holes appear in the middle. While this may be reasonable, it precludes performing opIndex on an element of the transposed result. So while transposed can be indexed if the ranges individually can be indexed, the resulting elements cannot be, making your code example unimplementable. --
