Namespace Reference Evaluation

When the interpreter encounters a namespace reference, it:

  1. Switches to the namespace.
  2. Evaluates the name.
  3. Switches back to the original namespace.

If for example, in the following, the current namespace is #.W, the interpreter evaluates the line: 

      A ← X.Y.DUP MAT

in the following way:

  1. Evaluate array MAT in current namespace W to produce argument for function.
  2. Switch to namespace X.Y within W.
  3. Evaluate function DUP in namespace W.X.Y with argument.
  4. Switch back to namespace W.
  5. Assign variable A in namespace W.