# Redefining structs without restart?

**URL:** <https://discourse.julialang.org/t/redefining-structs-without-restart/50826>\
**Category:** Internals & Design\
**Created:** [November 24, 2020, 5:08pm UTC](https://discourse.julialang.org/t/redefining-structs-without-restart/50826 "2020-11-24T17:08:10Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Volker\_Weissmann](https://avatars.discourse-cdn.com/v4/letter/v/c2a13f/32.png) [@Volker\_Weissmann](https://discourse.julialang.org/u/Volker_Weissmann)\
**Post date:** [November 24, 2020, 7:03pm UTC](https://discourse.julialang.org/t/redefining-structs-without-restart/50826/8 "2020-11-24T19:03:46Z")

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> [@Will Julia ever fix its "using ..." latency problems?](https://discourse.julialang.org/t/will-julia-ever-fix-its-using-latency-problems/50659/42):
>
> This may be viable when working with scripts (it is still ugly, and the history in the REPL becomes a useless mess), but it’s definitely not an option while developing modules. I’m mostly concerned with that. I find that working on modules is very tiresome because of the constant restartings required. And testing incurs the loading penalty every time too. To be completely honest, my workflow seems to me slower than with a compiled language such as Rust.

Same here.  
I wish you could redefine structures. The only workaround I know of is putting it inside a module:

```julia
module Data
    mutable struct MyStruct
        x::Int
    end
end

```

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