Reva: Changes To Tutorial

Changes to "Tutorial" between 2018-03-25 10:03:45 and 2018-03-25 10:13:53

   241    241   </pre>
   242    242   
   243    243   I have included the stack diagrams for some other useful stack manipulation
   244    244   words. Try experimenting with them by putting numbers on the stack and
   245    245   calling them to get a feel for what they do. Again, the text in parentheses
   246    246   is just a comment and need not be entered.
   247    247   
   248         -
   249    248   <pre>
   250         -2drop ( a b c -- a )
   251         -2dup ( a b -- a b a b )
   252         -2swap ( a b c d -- c d a b )
   253         -2over ( a b c d -- a b c d a b )
   254         -nip ( a b c --  a c )
   255         -tuck ( a b -- b a b )
   256         -rot ( a b c -- c a b )
          249  + 2drop ( a b c -- a )
          250  + 2dup ( a b -- a b a b )
          251  + 2swap ( a b c d -- c d a b )
          252  + 2over ( a b c d -- a b c d a b )
          253  + nip ( a b c --  a c )
          254  + tuck ( a b -- b a b )
          255  + rot ( a b c -- c a b )
   257    256   </pre>
   258    257   
   259    258   <h3>Problems</h3>
   260    259   Start each problem by entering:
   261    260   
   262    261   <pre>
   263    262    reset 11 22 33