Make move/assign/initialize easier on buffer pointers

[taylorswift]

should probably read through these:

SE-184 Improved Pointers

Since Swift 5 just got opened up for proposals, SE-184 Improved Pointers is ready for community review, and I encourage everyone to look it over and provide feedback. Thank you! < https://github.com/apple/swift-evolution/blob/master/proposals/0184-improved-pointers.md ···

SE-1084 (B): buffer pointer partial initialization API

Hi guys, after passing SE 184 (A) <https://github.com/apple/swift-evolution/blob/master/proposals/0184-unsafe-pointers-add-missing.md&gt;, I want to get some community feedback on the next phase of our Swift pointer overhaul which is a partial initialization/deinitialization API for UnsafeMutableBufferPointer and UnsafeMutableRawBufferPointer. You can read about the originally proposed API in the original SE 184 document <https://github.com/apple/swift-evolution/blob/master/proposals/0184…

Pitch: Improved Swift pointers

Hi all, I’ve written up a proposal to modify the unsafe pointer API for greater consistency, safety, and ease of use. ···

the name of the feature you’re talking about was called memorystate APIs during the review of SE-184, this is a draft of it but it had major problems so it was dropped from SE-184