(require mzlib/contract)

This library is designed as a backwards compatible library for old uses of contracts. It should not be used for new libraries; use scheme/contract instead.

The main differences: the function contract syntax is more regular and function contracts now support keywords, and union is now or/c.

The mzlib/contract library re-exports many bindings from scheme/contract:

	</c		guilty-party
	<=/c		integer-in
	=/c		list/c
	>/c		listof
	>=/c		make-none/c
	and/c		make-proj-contract
	any		natural-number/c
	any/c		none/c
	between/c		not/c
	box-immutable/c		one-of/c
	box/c		or/c
	build-compound-type-name		parameter/c
	coerce-contract		printable/c
	cons/c		promise/c
	contract		provide/contract
	contract-first-order-passes?		raise-contract-error
	contract-violation->string		real-in
	contract?		recursive-contract
	define-contract-struct		string/len
	define/contract		struct/c
	false/c		symbols
	flat-contract		syntax/c
	flat-contract-predicate		vector-immutable/c
	flat-contract?		vector-immutableof
	flat-murec-contract		vector/c
	flat-named-contract		vectorof
	flat-rec-contract