# Value of e

**URL:** <https://discourse.julialang.org/t/value-of-e/15958>\
**Category:** General Usage\
**Tags:** question\
**Created:** [October 6, 2018, 5:58am UTC](https://discourse.julialang.org/t/value-of-e/15958 "2018-10-06T05:58:20Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![Sukera](https://avatars.discourse-cdn.com/v4/letter/s/ce7236/32.png) [@Sukera](https://discourse.julialang.org/u/Sukera)\
**Post date:** [October 6, 2018, 7:43am UTC](https://discourse.julialang.org/t/value-of-e/15958/3 "2018-10-06T07:43:47Z")

</div>

Those math constants used to be available straight away in 0.6 and have moved to another package in 1.0. If you want to get used to that change and the other changes introduced, use 0.7 until you’re comfortable with the new bindings. 0.7 exists to provide deprecation warnings for stuff that’s moved out of Base in 1.0.

> [@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…

---

_[View the full topic](https://discourse.julialang.org/t/value-of-e/15958)._