# Interface for \`Number\`

**URL:** https://discourse.julialang.org/t/interface-for-number/2723
**Category:** General Usage
**Created:** [March 17, 2017, 4:44am UTC](https://discourse.julialang.org/t/interface-for-number/2723 "2017-03-17T04:44:49Z")
**Posts on this page:** 1
**Showing post:** 16

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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: [January 11, 2019, 5:48pm UTC](https://discourse.julialang.org/t/interface-for-number/2723/16 "2019-01-11T17:48:14Z")

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> [@stevengj](#):
>
> Writing truly type-generic numeric code, especially handling the dimensionful case, is tricky and takes testing, though.

Which is why existing best practices should be shared, possibly in a package.

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