[p0nce]

Yes it is useful, because "array ops" auto-vectorize well and you can write complex function that are vectorized. It's a bit like expression templates but with compiler support. Typically if something can be written as an array op expression it isn't worth rewriting with intrinsics or assembly. For me it's a killer feature :)

You can also mix and match scalar and slices, so for audio code it's quite cool:

    a[0..frames] += b[0..frames] * volume;