[AutoDiff] Add binary version of `differentiableFunction`. #21954
dan-zheng
merged
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swiftlang:tensorflow
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dan-zheng:differentiable-function-overloads
Add a new version of
differentiableFunctionthat supports binary functions.Add runtime tests.
Note: type-checker errors regarding closures (like the arguments to
differentiableFunction) are inscrutable and often don't highlightactual errors in source code. This is a significant hurdle for usability.