Labels & Jumps Demo

Generate it:

lumen --examples infinite-loop

label repeat
println 'Hello, world!'
jump repeat

The smallest possible demonstration of Lumen’s looping primitive. label repeat marks a point in the program; jump repeat transfers control back to it — forever, in this case, since there’s no condition around the jump. Run it and stop it with Ctrl+C.

See Labels & Jumps for how to turn this into a bounded loop with an exit condition.

Scan into Android

See Lumen on Android for how the scan-and-run pipeline works.

Note

This particular program never halts on its own (Ctrl+C on desktop) — on Android, use the runtime’s cooperative cancellation to stop it instead.