4.2 Literals

Special Form: quote datum

[R5RS] Evaluates to datum.

(quote x) => x (quote (1 2 3)) => (1 2 3)

Reader Syntax: 'datum

[R5RS] Equivalent to (quote datum).

'x => x '(1 2 3) => (1 2 3)

Note: R5RS says it is an error to alter the value of a literal expression. Gauche doesn't check constant-ness of pairs and vectors, so you can alter them using the destructive procedures such as set-car! and vector-set!. Doing so will cause unexpected results. Gauche does check constant-ness of strings, and signals an error if you try to alter a constant string.