# \[Accepted with Modifications\] SE-0237: Introduce with Contiguous {Mutable} Storage If Available methods

**URL:** <https://forums.swift.org/t/accepted-with-modifications-se-0237-introduce-with-contiguous-mutable-storage-if-available-methods/18713>\
**Category:** Announcements\
**Created:** [December 10, 2018, 6:11pm UTC](https://forums.swift.org/t/accepted-with-modifications-se-0237-introduce-with-contiguous-mutable-storage-if-available-methods/18713 "2018-12-10T18:11:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Douglas\_Gregor](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/douglas_gregor/32/1362_2.png) [@Douglas\_Gregor](https://forums.swift.org/u/Douglas_Gregor)\
**Post date:** [December 10, 2018, 6:11pm UTC](https://forums.swift.org/t/accepted-with-modifications-se-0237-introduce-with-contiguous-mutable-storage-if-available-methods/18713/1 "2018-12-10T18:11:24Z")

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Hello Swift Community,

The second review of [SE-0237 "Introduce `withContiguous{Mutable}StorageIfAvailable` methods](https://github.com/apple/swift-evolution/blob/master/proposals/0237-contiguous-collection.md) concluded on December 3rd, 2018. The proposal is **accepted with revisions**. The revised proposal shows the changes, which are:

- `Sequence` will have a new (defaulted) requirement `withContiguousStorageIfAvailable`, and
- `MutableCollection` will have a new (defaulted) requirement `withContiguousMutableStorageIfAvailable`.

Thanks to everyone who participated in the review!

Doug Gregor  
Review Manager

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<div class="post-metadata">

**Author:** ![Douglas\_Gregor](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/douglas_gregor/32/1362_2.png) [@Douglas\_Gregor](https://forums.swift.org/u/Douglas_Gregor)\
**Post date:** [December 10, 2018, 6:11pm UTC](https://forums.swift.org/t/accepted-with-modifications-se-0237-introduce-with-contiguous-mutable-storage-if-available-methods/18713/2 "2018-12-10T18:11:27Z")

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Closed on December 10, 2018, 6:11pm UTC