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3 Commits

Author SHA1 Message Date
Richard Wei
8bc6143a4c [AutoDiff] Rename 'move(along:)' to 'move(by:)'. 
Rename `move(along:)` to `move(by:)` based on the proposal feedback. The main argument for the change is that tangent vectors specify both a direction and a magnitude, whereas `along:` does not indicate that `self` is being moved by the specified magnitude.
 2021-02-23 21:45:01 -05:00
Richard Wei
e3db926e0c [AutoDiff] Remove '_Differentiable.zeroTangentVectorInitializer'. (#35329) 
Remove `_Differentiable.zeroTangentVectorInitializer` to address the feedback on the [proposal thread](https://forums.swift.org/t/differentiable-programming-for-gradient-based-machine-learning/42147). The corresponding change has already been made in the [proposal](https://github.com/rxwei/swift-evolution/blob/autodiff/proposals/0000-differentiable-programming.md).

Removed components:
- `zeroTangentVectorInitializer` and `zeroTangentVector` in `Differentiable`, `Array`, `Optional`, `Float`, `Double`, `Float80`, and SIMD types.
- `zeroTangentVectorInitializer` synthesis logic in `Differentiable` derived conformances.
 2021-01-20 10:45:03 -08:00
Dan Zheng
f3685f9a12 [AutoDiff] Conform Optional to Differentiable. (#32948) 
Make `Optional` conditionally conform to `Differentiable` when the `Wrapped` type does.
`Optional.TangentVector` is a wrapper around `Wrapped.TangentVector?`.

Also, fix `Array.TangentVector.zeroTangentVectorInitializer`.

Resolves TF-1301.
 2020-07-17 12:07:52 -07:00