I asked
does a preexisting nd array iterator exist?
got links to mir, docs I can barely read (srsly math language is
anticomprehension)
ndslice allocates, so, hottake misnamed. A slice is a reference
to an array, a dynmaic array is a gc allocated array
https://opendlang.org/library/mir.ndslice.allocation.slice.4.html#Slice
Found `field`, says its a something defined by an opIndex,
better, but no nd
`fieldnd.d`or something exists but it defines 2 types of nd
fields and not a generic mapping, idk
`FieldIterator` exists but its opSlice only takes 2 arguments so
I think I can rule it out as nd
etc.
So I dont think it exists in this tangled mess? Maybe, idk? I
think in its naming scheme it would be called an ndfield
