rhaj/rhai_engine/rhaibook/ref/keywords.md

Keywords

The following are reserved keywords in Rhai.

Active keywords	Reserved keywords	Usage
true, false		constants
let, const	var, static	variables
is_shared		shared values
	is	type checking
if, else	goto	control flow
switch	match, case	switching and matching
do, while, loop, until, for, in, continue, break		looping
fn, private, is_def_fn, this	public, protected, new	functions
return		return values
throw, try, catch		throw/catch exceptions
import, export, as	use, with, module, package, super	modules
global		automatic global module
Fn, call, curry		function pointers
	spawn, thread, go, sync, async, await, yield	threading/async
type_of, print, debug, eval, is_def_var		special functions
	default, void, null, nil	special values

Keywords cannot become the name of a function or variable, even when they are disabled.