# Surprising struct equality test

**URL:** <https://discourse.julialang.org/t/surprising-struct-equality-test/4890>\
**Category:** General Usage\
**Tags:** question\
**Created:** [July 17, 2017, 12:24am UTC](https://discourse.julialang.org/t/surprising-struct-equality-test/4890 "2017-07-17T00:24:30Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [July 17, 2017, 11:10am UTC](https://discourse.julialang.org/t/surprising-struct-equality-test/4890/16 "2017-07-17T11:10:58Z")

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Strings are for implementation reasons defined as a mutable struct and therefore use object equality for `===`.

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_[View the full topic](https://discourse.julialang.org/t/surprising-struct-equality-test/4890)._