# Remove additional rule that parameters must match for dispatch

**URL:** <https://discourse.julialang.org/t/remove-additional-rule-that-parameters-must-match-for-dispatch/11482>\
**Category:** General Usage\
**Created:** [June 6, 2018, 6:52pm UTC](https://discourse.julialang.org/t/remove-additional-rule-that-parameters-must-match-for-dispatch/11482 "2018-06-06T18:52:51Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Pbellive](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pbellive/32/3604_2.png) [@Pbellive](https://discourse.julialang.org/u/Pbellive)\
**Post date:** [June 6, 2018, 8:27pm UTC](https://discourse.julialang.org/t/remove-additional-rule-that-parameters-must-match-for-dispatch/11482/3 "2018-06-06T20:27:16Z")

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FWIW I’ve run into this limitation on a real project. See [Understanding the use of Union with parametric types](https://discourse.julialang.org/t/understanding-the-use-of-union-with-parametric-types/337) for a brief discussion. I didn’t know the issue had been addressed. That’s cool!

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_[View the full topic](https://discourse.julialang.org/t/remove-additional-rule-that-parameters-must-match-for-dispatch/11482)._