Amiga MA Magazine 1998 #6/amigamamagazinepolishissue1998.iso/coders/jËzyki_programowania/logo/powerlogo/logo-startup.doc

Text File | 1992-11-10 | 6KB | 206 lines

   LOGO-Startup.doc

The default 'LOGO-Startup' file loads all project files specified, and
provides the following:

Menu items:

   Load           Load a LOGO program file. Gets a file name from the
                  file requester.

   Save           This saves contents of all unprotected variables to a
                  LOGO program file. Gets the file name from the file
                  requester.

   Edit           Switch to text editor.

   Edit File      Edit a LOGO program file. Gets a file name from the
                  file requester.

   Turtle         Prepare screen, window, and turtle for turtle graphics.
                  This loads the 'Turtle-Shell' file.

   Interrupt      Interrupt a program. This is like the break key (CTRL G)
                  except you may continue by giving the command 'stop'.

   Top Level      Stop a program. This is similar to the break
                  key (CTRL G).

   Quit           Exit from LOGO.

Utility procedures:

all
   Output list of all variable names.

allnames
   Output list of names that contain something other than procedures.

allprocs
   Output list of names that contain procedures.

clean-quit
   Exit LOGO.

closeall
   Close all files, turtles, windows, and screens.

combine        object object
         object = Any list or word.
   Concatenates the objects using `se' or `word' as appropriate based
   on the second input.

command        text ( port-name host-name file-ext )
         text =   Word or list containing instruction to be run
                  by the command destination.
         port-name = Name of destination port, default 'REXX'.
         host-name = Name of port to get commands back from ARexx,
                     default output of 'hostport'.
         file-ext =  File name extension ARexx will use to find
                     command, default 'LOGO'.
   LOGO command to send an ARexx command.

create-message
   Allocate an ARexx message.

delete-message
   deallocate an ARexx message.

ed             name
               name-list
         name = Word, a variable name.
         name-list = List of names.
   Edit the contents of specified variables. This procedure works by
   calling the 'QED' text editor by Darren M. Greenwald, or by calling
   'C:ED'.

edf            file-name
         file-name = An Amiga DOS file name (word or list).
   Edit the contents of specified file. This procedure works by
   calling the 'QED' text editor by Darren M. Greenwald, or by calling
   'C:ED'.

edit           ( name )
               ( name-list )
         name = Word, a variable name.
         name-list = List of names.
   Edit the contents of specified variables. This procedure works by
   calling the 'QED' text editor by Darren M. Greenwald, or by calling
   'C:ED'.

emptyof       object
         object = Any list or word.
   Returns the empty word if the `object' is a word, or the empty list if
   `object' is a list.

existp         name
   Output true if name is a variable.

filter        test object
         test = A comparison instruction (word or list).
         object = Any list or word.
   Outputs an object that contains only those items that satisfy the
   test.  Example, `filter [ < 10 ] [ 9 11 13 3 ]' produces `[ 11 13 ]'.

flush
   Erase all unprotected names.

ignore         object ( object... )
         object = Any word or list.
   Does nothing. Ignores the output of an operation.

interupt
   A LOGO command shell that may be run from within other procedures.

names
   Output list of unburied names that contain something other than
   procedures.

pots           name
               name-list
         name = Word, a variable name.
         name-list = List of names.
   Print out procedure titles. Prints names, inputs, and optional inputs.

procs
   Output list of unburied names that contain procedures.

prosave        file-name name
               file-name name-list
         file-name = An AmigaDOS file name (word or list).
         name = Word, a variable name.
         name-list = List of names.
   Save names, their bindings, and their protection (bury) status to
   file with an icon.

remove        object object
         object = Any list or word.
   Output second object after removing any items that are also in the
   first object.  Example, `remove "aeiou "hello' produces `"hll'.

reset
   Close everything, erase all names but the 'LOGO-Startup' file.

reverse        object
         object = Any word or list.
   Reverse the order of the items in the object.

say            object ( object )
         object = Any word or list.
   Uses the Amiga's speech capabilities to `say' the object, by printing to
   the 'SPEAK:' device.

set-turtle     ( view-modes bit-planes )
         view-modes = Number, viewport modes, sum of:
                  1 = hires
                  2 = lace
         bit-planes = Number of bit planes (1 to 6) .
   Prepare screen, window, and turtle for turtle graphics. This loads the
   'Turtle-Shell' file.

sort           test list
         test = A compare instruction (word or list).
         list = Any list.
   Sort list based on test.

spr            object
         object = Any word or list.
   Print out sorted contents of lists verticaly.

switch         number list
         number = Index into list.
         list = List of instruction-lists.
   Run numbered instruction-list from the list.

vpr            object
         object = Any word or list.
   Print out contents of lists verticaly.

Examples:

To print a list of all variable names currently in use, type this command:

   vpr all

To list just the names of the procedures:

   vpr allprocs

To list them alphabetecally:

   vpr sort [ alphap ] allprocs

or:

   spr allprocs

or just names:

   spr names

To save the contents of all variables currently in use:

   prosave filerequest all