ludic/docs/language/builtins/fn-print.md

id	name	category	kind	tokens	sig	tip	order
fn-print	print	builtins	builtin	print	print(x)	Print an int or string followed by a newline — for headless tests and debugging.	0

Writes its argument to standard output followed by a newline. It accepts either an integer or a string, so it is the go-to tool for quick debugging and for headless test programs that emit numbers a test harness can check. It is a diagnostic channel, separate from anything drawn on screen with the Screen API, and is most useful in Start- or Update-phase handlers while you are iterating. For interpolated messages, build the string first with a backtick template and pass that.

Parameters:

• x — the value to print, an int or a string

program PrintScore {
  state PrintScoreState {
    score: int = 0
  }

  handler CountUp(print_score_st: mut PrintScoreState) phase Update {
    print_score_st.score = print_score_st.score + 10
    print(print_score_st.score)
    if print_score_st.score >= 30 { quit() }
  }
}