# Announcing Traits.jl - a revival of Julia traits

**URL:** <https://discourse.julialang.org/t/announcing-traits-jl-a-revival-of-julia-traits/35683>\
**Category:** Package Announcements\
**Tags:** package, announcement, traits\
**Created:** [March 7, 2020, 10:57am UTC](https://discourse.julialang.org/t/announcing-traits-jl-a-revival-of-julia-traits/35683 "2020-03-07T10:57:51Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Mason](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mason/32/2423_2.png) [@Mason](https://discourse.julialang.org/u/Mason)\
**Post date:** [March 8, 2020, 6:11pm UTC](https://discourse.julialang.org/t/announcing-traits-jl-a-revival-of-julia-traits/35683/4 "2020-03-08T18:11:08Z")

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Very interesting package! I like that you allow the user to define traits which may dynamically dispatch, but I think you should put a warning somewhere in the readme that if the user uses a trait pattern that depends on runtime information, they will generate slow code.

Can I ask why this is on a separate registry from the general registry? Is that just a stopgap until you can register your dependant packages or a long term solution for you?

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