# Warning in 1.0 +?

**URL:** <https://discourse.julialang.org/t/warning-in-1-0/35281>\
**Category:** General Usage\
**Created:** [February 28, 2020, 10:00am UTC](https://discourse.julialang.org/t/warning-in-1-0/35281 "2020-02-28T10:00:00Z")\
**Posts on this page:** 1\
**Showing post:** 18

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**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [February 28, 2020, 2:04pm UTC](https://discourse.julialang.org/t/warning-in-1-0/35281/18 "2020-02-28T14:04:16Z")

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> [@programista](#):
>
> If I do not know that there is a Statistic(s?) package, then for user ‘mean’ does not exist in Julia

These points were discussed in detail at the time when `Statistics` was moved out from `Base`. If you are interested, please look them up in the archives. There is very little point in restarting them 2 years later.

There is detailed advice on upgrading to 1.0, with

> [@PSA: use Julia 0.7 if you are upgrading](https://discourse.julialang.org/t/psa-use-julia-0-7-if-you-are-upgrading/13321):
>
> A lot of people are posting issues where their old code doesn’t work anymore on 1.0 because some function has been renamed or removed. The 0.7 release exists exactly for this reason: your old code will work on 0.7 and give you a specific warning about how to fix your code. If you have any old code, you should use 0.7 to get these warnings before switching to 1.0; even if you just have work habits that may need changing, you should probably use 0.7 for a while. If someone posts an issue like thi…

as a good starting point. Please respect the effort that people have put into these things by reading them first and following the advice there.

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