# Type stability for higher derivatives in ForwardDiff

**URL:** <https://discourse.julialang.org/t/type-stability-for-higher-derivatives-in-forwarddiff/66686>\
**Category:** General Usage\
**Tags:** forwarddiff, type-stability\
**Created:** [August 19, 2021, 6:18pm UTC](https://discourse.julialang.org/t/type-stability-for-higher-derivatives-in-forwarddiff/66686 "2021-08-19T18:18:05Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![longemen3000](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/longemen3000/32/7298_2.png) [@longemen3000](https://discourse.julialang.org/u/longemen3000)\
**Post date:** [August 19, 2021, 10:07pm UTC](https://discourse.julialang.org/t/type-stability-for-higher-derivatives-in-forwarddiff/66686/3 "2021-08-19T22:07:56Z")

</div>

related:

> [@Allocation on ForwardDiff + DiffResults + StaticArrays](https://discourse.julialang.org/t/allocation-on-forwarddiff-diffresults-staticarrays/46534/3):
>
> Cf [https://github.com/JuliaDiff/ForwardDiff.jl/pull/315](https://github.com/JuliaDiff/ForwardDiff.jl/pull/315) Something similar for Hessian may help resolve this.

---

_[View the full topic](https://discourse.julialang.org/t/type-stability-for-higher-derivatives-in-forwarddiff/66686)._