A faster DenseMatrix Symbol.iterator

[dvd101x]

Hi,

This is a faster algorithm for doing Symbol.iterator and some benchmarks. It runs 3 to 4 times faster.

The main changes that increase speed are:

• Don't clone the index in every iteration (just on function calls) about 2.4 times faster
• Don't check if the last dimension is the last dimension on every element of the last dimension about 1.5 times faster

[josdejong]

Thanks David, this is a nice improvement 👌

[josdejong]

Published now in v14.3.0