An example of dylan-environment interactive functionalityΒΆ

Note: dylan-environment is currently only supported on Windows. Unix users may wish to skip this section.

The dylan-environment has a few more options and command groups, which will be presented briefly here:

Options Description
-ARGUMENTS arguments Arguments for the project’s application
-PLAY Open and debug the playground project
-START Start the project’s application
-DEBUG Debug the project’s application
-PROFILE Profile the execution of the application
-SHARE-CONSOLE Share the console with the application
Command Group Description
BREAKPOINTS breakpoint commands
DEBUGGING debugging commands
MEMORY memory viewing commands
REMOTE-DEBUGGING remote debugging commands
STACK stack commands

The following example demonstrates the console environment’s interactive functionality. In the example, the user starts dylan-environment in interactive mode, opens the playground project, performs some arithmetic, defines a method, and then traces it:

# dylan-environment
Hacker Edition
Version 2014.1
Copyright (c) 1997-2004, Functional Objects, Inc.
Portions Copyright (c) 2004-2014, Dylan Hackers
Portions Copyright (c) 2001-2012, Ravenbrook Ltd.

> play
Opened project gui-dylan-playground
Starting: gui-dylan-playground
? 1 + 2;
  $0 = 3
? define method factorial (x) if (x < 2) 1 else x * factorial(x - 1) end end;
? factorial(5);
  $1 = 120
? :trace factorial
? :set messages verbose
Messages: verbose
? factorial(6);
0: factorial (<object>): (6)
  1: factorial (<object>): (5)
    2: factorial (<object>): (4)
      3: factorial (<object>): (3)
        4: factorial (<object>): (2)
          5: factorial (<object>): (1)
          5: factorial (<object>) => (2)
        4: factorial (<object>) => (6)
      3: factorial (<object>) => (24)
    2: factorial (<object>) => (120)
  1: factorial (<object>) => (720)
0: factorial (<object>) => (#[720])
  $2 = 720
? :exit

The commands described in this appendix can also be used in the Command Line window within the regular Open Dylan development environment. Choose File > Command Line... from the main window and use commands at the ? prompt.