F-Flat

F♭ (pronounced F-flat) is a toy language.

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Interactive F♭

If you are running F♭ from the github repo, you can start the REPL using npm start. You will then see the F♭ command prompt:

          []]
          []]
[]]]]]]]] []] []]]      F♭ Version 0.0.8
[]]       []]]   []]    Copyright (c) 2000-2020 by Jayson Harshbarger
[]]       []]   []]
[]]]]]]   []]  []]      Type '.exit' to exit the repl
[]]       []][]]        Type '.clear' to reset
[]]                     Type '.help' for more help

f♭>

You can exit the REPL by hitting ctrl-C twice or by typing .exit

f♭> 
(To exit, press ^C again or type .exit)
f♭>

Starting the REPL again you can enter values either as a single line or one value at at time:

f♭> 1 2
[ 1 2 ]

f♭> 'Hello'
[ 1 2 'Hello' ]

f♭>

The current stack will be printed after each value is entered. The current stack can be cleared using the clr command, the entire envoronment can be reset using the .clear REPL command.