[racket] rudimentary Q. about lambda + contracts

Having gotten in the habit of writing function contracts, I prefer define/contract to (provide (contract-out ...)) because it keeps the contract near the function.

Is there an analogous idiom for lambda? I see there is no lambda/contract, and the docs on contracts for case-lambda [1] uses the (provide (contract-out ...)) style.

[1] http://docs.racket-lang.org/guide/contracts-general-functions.html#(part._contracts-case-lambda)
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