Simple demos

• simple.hs 1 B
  The smallest non-empty program: a single newline character.
• null.hs 0 B
  The empty program — zero bytes. Specially trapped by the interpreter.

Hello World

• first.hs 39 B
  Minimal "Hello, world!" — a single hatchery feeding a bear. Runs forever.
• hello-1.hs 71 B
  "Hello, World!" using a universe, a hatchery, and snowmelt-powered rapids.
• hello-2.hs 119 B
  An alternative arrangement using the power-override rule.
• hello-3.hs 157 B
  Uses marshy force, field-sense shallows, and a hydro-power spring.
• hello2.hs 72 B
  A compact "Hello, World!" shipped as a test for the Perl interpreter.
• helloworld.hs 132 B
  A fourth take on "Hello, World!" — generated from HomeSpringTree source.

Interactive

• cat.hs 3 B
  Echoes its input back to output, like the Unix cat utility.
• add.hs 1.3 KB
  Reads two single-digit numbers on separate lines and outputs their sum.
• hi.hs 379 B
  Prompts for your name and greets you back with "Hi".
• quiz.hs 505 B
  Asks "what is six times four?" — answer "24" to terminate silently, anything else gets "you lie!".

Counters & clocks

• count.hs 1.5 KB
  Counts from 0 to 9 then up to 100 using a bridged bear + hatchery cascade.
• count2.hs 8.3 KB
  A more elaborate counter built from digit generators.
• count3.hs 1.8 KB
  Another counter variant, in the same family.
• count4.hs 10.2 KB
  A larger counter implementation — ~10 KB of generated source.
• count.poem.hs 2.2 KB
  A counter written in the poetic style Homespring is intended to be read in.
• count.poem.withfillers.hs 2.3 KB
  A poetic counter with additional filler words for extra flow.
• clock.hs 352 B
  A ticking clock driven by the time node and a range-switch cascade.

FizzBuzz

• fizzbuzz.hs 10.5 KB
  Classic FizzBuzz — multiples of 3 → Fizz, 5 → Buzz, both → FizzBuzz. Very very slow, due to rendering a giant tree. First output appears around tick 450, which will take several minutes. Gets much faster after that.
• fizzbuzz.poem.hs 18.3 KB
  FizzBuzz written in the poetic style — considerably longer. Very very slow, due to rendering a giant tree. First output appears around tick 420, which will take several minutes. Gets faster after that.
• fizzbuzztick.hs 6.9 KB
  A compact FizzBuzz variant driven by time ticks. Much much faster than the other FizzBuzz examples, but without numbers.

Miscellaneous

• name.hs 92 B
  An acrostic program whose node names spell out HOMESPRING line by line.
• flipflop.hs 364 B
  A flip-flop that alternates state using an inverse-lock and a pair of pump/switch nodes. Enter input to trigger a cycle, which will be appended with x, then o, then x, etc
• tic.hs 2.7 KB
  Tic-tac-toe — by far the most elaborate program in the collection. A simple game of tic-tac-toe. To make a move, enter 1-9 (corresponding to a position on the grid, starting top left, reading across the rows, then down the columns). o goes first, then x. It takes around 240 ticks to process each turn. Wait for the board to fully render before making the next move. The game does not terminate when someone wins. Invalid inputs count as a wasted turn.

Homespring.cloud is a visual debugger and learning tool for the Homespring programming language.

Homespring programs are poems that describe river systems, where salmon pass data up and down stream.

There are a handful of example programs to get you started — just hit the play button to see it in action.