Move expression is somewhat counter-intuitive

[mknyszek]

Currently the move expression, specified by

var x = |3>;
var y = |2>;
x = `x >< `y // y gets set to Null

which take the value out of the local value, places a Null value there, and therefore allows each value to be consumed in a tensor product. However, this gets hairy if one has

var x = |3>;
{
  var y = x;
  var z = |3>;
  z = `y >< `z; // fails!
}

The semantics correspond to Rust's move semantics, but considering that QScript objects are reference-counted, it doesn't really make too much sense in the context of a scripting language.