How to write Hello World in Hoon and Urbit?
Writing Functions on the REPL
=replsquare |= a=@ud
^- @ud
%+ mul
a
a
(replsquare 12)
The last command should return 144
Writing actual programs and saving them
|mount %base
# Change Files
|commit %base
# Take files off file system
|unmount %base
:: Square a number.
|= a=@ud
^- @ud
%+ mul
a
a
=+ foo=42
|_ =bowl:gall
++ on-init `..on-init
++ on-save !>(~)
++ on-load |=(vase `..on-init)
++ on-poke |=(cage !!)
++ on-watch |=(path !!)
++ on-leave |=(path `..on-init)
++ on-peek |=(path ~)
++ on-agent |=([wire sign:agent:gall] !!)
++ on-arvo |=([wire sign-arvo] !!)
++ on-fail |=([term tang] `..on-init)
--
|commit %base
=skeleton -build-file %/app/skeleton/hoon
# View Source Code
skeleton
-.skeleton
+.skeleton
=lifecycle -build-file %/app/lifecycle/hoon
=pokeme -build-file %/app/pokeme/hoon
# Start pokeme
|rein %base [& %pokeme]
:pokeme %inc
:pokeme %dec
:pokeme +dbug [%state %val]
=pokeit -build-file %/app/pokeit/hoon
|rein %base [& %pokeme] [& %pokeit]
:pokeit %inc
:pokeit %dec
:pokeme +dbug [%state %val]