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svn: r3699
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Version 351
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. the or/c contract now accepts multiple higher-order
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contracts, as long as they can be distinguished by some
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first-order property (for example, the arity of the
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function).
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. failures of the first-order aspects of contracts are now
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checked in the module that provides, not just the
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requiring module. This means that this module:
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(module m mzscheme
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(require (lib "contract.ss"))
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(provide/contact [f (-> integer? integer?)])
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(define (f x y) x))
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will signal an error as soon as it is required, rather
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than waiting for a variable reference to `f' (as it used
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to).
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. rewrote some of the internals of the contract library to
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get a factor of 2 speedup for tight loops that do a lot
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of contract checking (FWIW, I had introduced this
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slowdown a few months ago in an attempt to optimize ...)
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------------------------------
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Version 350
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------------------------------
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