# The relation between pattern matching and multiple dispatch

**URL:** <https://discourse.julialang.org/t/the-relation-between-pattern-matching-and-multiple-dispatch/2433>\
**Category:** Internals & Design\
**Tags:** question\
**Created:** [March 4, 2017, 11:51am UTC](https://discourse.julialang.org/t/the-relation-between-pattern-matching-and-multiple-dispatch/2433 "2017-03-04T11:51:10Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![yuyichao](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/yuyichao/32/20_2.png) [@yuyichao](https://discourse.julialang.org/u/yuyichao)\
**Post date:** [March 4, 2017, 3:07pm UTC](https://discourse.julialang.org/t/the-relation-between-pattern-matching-and-multiple-dispatch/2433/10 "2017-03-04T15:07:22Z")

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Also note that the pattern matching this way is almost certainly not going to be as expressive as conditions since that’ll make the dispatch undecidable and it’ll make every other dispatch slow, something we absolutely don’t want.

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