# An official proposal for "diverges(from:)"

**URL:** <https://forums.swift.org/t/an-official-proposal-for-diverges-from/15279>\
**Category:** Pitches\
**Created:** [August 15, 2018, 8:44pm UTC](https://forums.swift.org/t/an-official-proposal-for-diverges-from/15279 "2018-08-15T20:44:11Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![ben-cohen](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/ben-cohen/32/296_2.png) [@ben-cohen](https://forums.swift.org/u/ben-cohen)\
**Post date:** [August 17, 2018, 8:40pm UTC](https://forums.swift.org/t/an-official-proposal-for-diverges-from/15279/5 "2018-08-17T20:40:27Z")

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> [@CTMacUser](#):
>
> I need a champion to put up an implementation branch; the actual code is given in the proposal, the champion needs to supply test cases.

Hi @CTMacUser – is there a reason why you're not able to put up the implementation as a PR? If there's anything unclear about how to integrate into the stdlib or how the tests should be written, I'm sure people would be happy to help over on the [stdlib dev forum](https://forums.swift.org/c/development/stdlib). Writing the implementation and tests is an integral part of putting together the proposal, as it helps bottom out any edge cases or implementation nuances that might otherwise be missed.

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_[View the full topic](https://forums.swift.org/t/an-official-proposal-for-diverges-from/15279)._