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add @history[] note for change in 0a0c62a1e6

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Robby Findler 2014-07-04 18:47:46 -05:00
parent 357bcb0cb6
commit fb04864742
1 changed files with 4 additions and 0 deletions
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pkgs/racket-pkgs/racket-doc/scribblings/reference/contracts.scrbl
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@ -2686,11 +2686,15 @@ Produces the name used to describe the contract in error messages.
To support @racket[value-contract] and @racket[value-blame]
in your own contract combinators, use @racket[prop:blame] or
@racket[impersonator-prop:blame].
@history[#:added "6.0.1.12"]
}
@defproc[(has-blame? [v any/c]) boolean?]{
Returns @racket[#t] if @racket[v] is a value that
has a contract with blame information attached to it.
@history[#:added "6.0.1.12"]
}
@defproc[(contract-projection [c contract?]) (-> blame? (-> any/c any/c))]{