Compatibility: compat.ss

This library defines a number of procedures and syntactic forms that are commonly provided by other Scheme implementations. Most of the procedures are aliases for built-in MzScheme procedures, as shown in Figure 15.1. The remaining procedures and forms are described below.

Figure 15.1: Compatibility aliases

Same as (not (pair? v)).

(defmacro name formals body-expr )

Expands into an equivalent define-macro expression.

Gets a property value associated with the symbol sym. The property argument is also a symbol that names the property to be found. If the property is not found, default is returned. If the default argument is omitted, #f is used as the default.

(letmacro name formals macro-body body-expr )

Expands into an equivalent let-macro expression.

Emulates Chez Scheme's new-cafe.

Installs a value for property of the symbol sym. See getprop above.

This is the same as mergesort (see section 15.2.11) with the arguments reversed.