This got me interested in https://docs.raku.org/language/list#index-entry-Shaped_arrays
and I find myself wanting to implement a role "Shaped" and applying it to List, for an immutable shaped list, whose implementation packs its elements for o(1) lookup... on my ever-lengthening to-do list -y On Fri, Feb 5, 2021 at 10:06 AM Elizabeth Mattijsen <l...@dijkmat.nl> wrote: > > On 5 Feb 2021, at 15:49, Theo van den Heuvel <vdheu...@heuvelhlt.nl> > wrote: > > I cannot seem to find an idiomatic way to get the dimensions of a > multidimensional array, > > other than by looking at the size of the first row and column, with > @m[0;*].elems and @m[*;0].elems. > > Am I missing something in the docs? > > If it's a shaped multidimensional array, you can call the .shape method > > my @a[3;3;3]; > dd @a.shape; # (3,3,3) > > If it is not, then your workaround appears the way to do it.
