Hello World & Reverse a String in PicoLisp

[cess11]

Congrats on taking the first step to contributing to the Sample Programs in Every Language repository!

For simplicity, please make sure that your pull request includes one and only one sample program and language.

Please Complete the Following

• I would NOT like credit for my contribution in the article (credit will be included otherwise)
• I named the pull request using <Sample Program> in <Language> format
• I created/updated the language README
  • I added the sample program name to the README
  • I added fun facts (i.e. debut, developer, typing, etc.)
  • I added reference link(s) to the README

Notes

Right, so I got to make notes here at the pull request.

Next up would be to write web server versions of the picolisp examples.

If there are no Factor or Forth contributions I could probably add those as well.

[jrg94]

Alright, so I cleaned up a couple things! Everything looks great.

I have a couple questions though. Both picoLisp examples run a bit odd using the online editor: https://www.jdoodle.com/execute-picolisp-online

If I run the Hello World example:

: -> "Welcome to Picolisp online ide from JDoodle.com"
: Hello, World!
-> "Hello, World!"
: 


 JDoodle - Timeout -  Some common reasons for Timeout 
Your Program may have a endless loop 
Please check the program and try again or contact JDoodle support at jdoodle@nutpan.com for more info.

Meanwhile, the string reversal example:

: -> "Welcome to Picolisp online ide from JDoodle.com"
: 
EOF Overrun
Command exited with non-zero status 1

[cess11]

Hi!

I'm not sure why the first shows a warning. It doesn't seem to when I turn on "interactive mode".

The second probably fails because the web REPL lacks a stdin, and it seems that it tries to run the loop or script once again when 'read fails, until it hits the output or heap limit. It also seems to happen if one tries to enter values in the stdin field.

I tested both snippets in a local REPL, this is the first time I've seen a web version for picoLisp so I'm not aware of the implementation details.

[jrg94]

Do you have a link to the local REPL you're using? I'd like to include it in the article.

[cess11]

http://software-lab.de/picoLisp.tgz for the rolling release, under Debian-style systems 'apt-get install picolisp' usually works, while 'pacman -S picolisp' usually works under Arch-style systems.

If you want me to I can do a couple of simple asciinema recordings you could use.

[jrg94]

Hey, if you want, that would be awesome! I don't have a Linux machine on hand to run those tests locally.

[jrg94]

Code looks great! Thanks for your help.

[cess11]

Good enough?

Could probably take some more time tomorrow or during weekend to record writing down scripts and running those rather than just grabbing a short REPL session.

https://asciinema.org/a/HdFjKizOUYKdcyFoG6h4RPhjn

https://asciinema.org/a/cEkKRFzW3CIUqPXrBryPIUMBx

[jrg94]

This is great stuff. I appreciate the help. 😄

I'll probably embed these directly into the articles, if you don't mind.

[jrg94]

Also, just for reference, it seems the online REPL runs off the hook without the (bye) command.

[cess11]

Of course, embedding them was the idea.

Ah, right, good to know. I fiddled some with it but decided it didn't change much, perhaps that online REPL doesn't recognise '# as a comment operator or something.