Feature/commands (#18)

* re-organized command structure * added 'dup' command
2025-12-17 04:21:01 +01:00 · 2023-11-12 20:29:10 +01:00
parent 0782b0920b
commit 2f56761bf1
6 changed files with 310 additions and 82 deletions
--- a/rpn.pod
+++ b/rpn.pod
@@ -167,6 +167,7 @@ Commands:
    shift                remove the last element of the stack
    reverse              reverse the stack elements
    swap                 exchange the last two stack elements
+    dup                  duplicate last stack item
    history              display calculation history
    help|?               show this message
    quit|exit|c-d|c-c    exit program