$ python -m widip examples/hello-world.yaml
Hello world!

$ python -m widip examples/shell.yaml
73
23
  ? !grep grep: !wc -c
  ? !tail -2

Open terminal and run widip to start an interactive session. The program bin/yaml/shell.yaml prompts for one command per line, so when we hit ↵ Enter it is evaluated. When hitting ⌁ Ctrl+D the environment exits.

--- !bin/yaml/shell.yaml
!echo Hello world!
Hello world!

The first example in https://react.dev/ in diagrammatic style.

fibfast function from https://wiki.c2.com/?SweetExpressions.

• https://rosettacode.org
• rosetta examples directory