my $string = "Hello, World!";
  say $string[0..4]; # prints "Hello\n"
  $string[7...] = "Larry!";
  say $string; # prints "Hello, Larry!\n"

We already have our strings acting as objects, and we have [] as a
postcircumfix operator, so it's something that someone could define
easily. Of course, I have no idea how to reconcile this with all the
talk of unicode other than to say that the easy stuff should be easy.

It just follows this would also be nice for arrays, to replace splice.
For me, these two functions are the most bothersome part of Perl 5, and
I would love to see them go.

matt