Disable Looping =============== {{#include ../links.md}} For certain scripts, especially those in embedded usage for straight calculations, or where Rhai script [`AST`]'s are eventually transcribed into some other instruction set, looping may be undesirable as it may not be supported by the application itself. Rhai looping constructs include the [`while`], [`loop`], [`do`] and [`for`] statements. Although it is possible to disable these keywords via [`Engine::disable_symbol`][disable keywords and operators], it is simpler to disable all looping via [`Engine::set_allow_looping`][options]. ```rust use rhai::Engine; let mut engine = Engine::new(); // Disable looping engine.set_allow_looping(false); // The following all return parse errors. engine.compile("while x == y { x += 1; }")?; engine.compile(r#"loop { print("hello world!"); }"#)?; engine.compile("do { x += 1; } until x > 10;")?; engine.compile("for n in 0..10 { print(n); }")?; ```