User:Dan Bron/Temp/Hierarchy/Mullings

1. To do this right, I really need to finish the description of lexing 1. The thread on NB.. led to a change to ;: . This is a good candidate for a rhematics example. EG: Which one of the following contains a comment? 1. Hint: this is NB.... not a comment 1. +/ % # NB.: average 1. 123NB. I like weird numbers! 1. Look Ma, I made a newNB. control word! 1. spaces? we don`NB.need no stink'n spaces! 1. Copulae as transparent, assignment of verbs vs. assignment of nouns (vs. assignment of mapped nouns), immediate vs. latent evocations:

   sum=:plus=:+
   sum NB.  On a single line, copulae are always transparent, except as the last operation, where display is supressed.
+

   hello =: 'hi'
   goodbye =: hello
   goodbye  NB.  Nouns are always immediately replaced by their evocations
hi

   plus=:+
   sum=:plus
   sum    NB.  Higher nameclasses are latent.
plus


  NB.  So changing the previous name .. changes the cascaded name
  NB.  This is not true of nouns, but there's a way to emulate teh
  NB.  behaviour, using mapped files.

  $ 'h' f.  NB.  Immediate
  $ 'h' ~  NB.  Latent