# Result\_dual vs getdual. signs are the opposite

**URL:** <https://discourse.julialang.org/t/result-dual-vs-getdual-signs-are-the-opposite/16355>\
**Category:** Optimization (Mathematical)\
**Created:** [October 15, 2018, 5:41pm UTC](https://discourse.julialang.org/t/result-dual-vs-getdual-signs-are-the-opposite/16355 "2018-10-15T17:41:20Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![miles.lubin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/miles.lubin/32/279_2.png) [@miles.lubin](https://discourse.julialang.org/u/miles.lubin)\
**Post date:** [October 15, 2018, 9:17pm UTC](https://discourse.julialang.org/t/result-dual-vs-getdual-signs-are-the-opposite/16355/4 "2018-10-15T21:17:04Z")

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This was announced as a breaking change at [MathOptInterface and upcoming breaking changes in JuMP 0.19](https://discourse.julialang.org/t/mathoptinterface-and-upcoming-breaking-changes-in-jump-0-19/4874) but didn’t make it into the release notes. I’ll add it.

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_[View the full topic](https://discourse.julialang.org/t/result-dual-vs-getdual-signs-are-the-opposite/16355)._