Update dependency apple/swift-collections to from: "1.3.0" #19
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This PR contains the following updates:
from: "1.2.0"->from: "1.3.0"Release Notes
apple/swift-collections (apple/swift-collections)
v1.3.0: Swift Collections 1.3.0Compare Source
This feature release supports Swift toolchain versions 6.0, 6.1 and 6.2, and it includes the following improvements:
BasicContainersmoduleThis new module collects ownership-aware, low-level variants of existing data structures in the core standard library. In this release, this module consists of two array variants,
UniqueArrayandRigidArray.These new types are provided as less flexible, noncopyable alternatives to the classic
Arraytype. The standardArrayimplements value semantics with the copy-on-write optimization; this inherently requires elements to be copyable, and it is itself copyable.struct UniqueArray<Element>is a noncopyable array variant that takes awayArray's copy-on-write behavior, enabling support for noncopyable elements. This type's noncopyability means mutations can always assume that the array is uniquely owned, with no shared copies (hence the name!). This means that array mutations such as mutating an element at an index can behave much more predictably, with no unexpected performance spikes due to having to copy shared storage.struct RigidArray<Element>goes even further, by also disabling dynamic resizing. Rigid arrays have a fixed capacity: they are initialized with room for a particular number of elements, and they never implicitly grow (nor shrink) their storage. When a rigid array's count reaches its capacity, it becomes unable to add any new items -- inserting into a full array is considered a programming error. This makes this a quite inflexible (or rigid) type indeed, as avoiding storage overflow requires careful, up front planning on the resource needs of the task at hand. In exchange, rigid arrays can have extremely predictable performance characteristics.UniqueArrayis a great default choice when a task just needs an array type that is able store noncopyable elements.RigidArrayis best reserved for use cases that require absolute, pedantic control over memory use or latency -- such as control software running in environments with extremely limited memory, or when a certain task must always be completed in some given amount of time.The
UniqueandRigidprefixes applied here establish a general naming convention for low-level variants of the classic copy-on-write data structure implementations. Future releases are expected to flesh out our zoo of container types by addingUniqueandRigidvariants of the existingSet,Dictionary,Deque,Heapand other constructs, with type names such as asRigidDictionaryandUniqueDeque.TrailingElementsModulemoduleThis new module ships a new
TrailingArrayconstruct, a preview of a new low-level, ownership-aware variant ofManagedBuffer. This is primarily intended as a interoperability helper for C constructs that consist of a fixed-size header directly followed by variable-size storage buffer.ContainersPreviewmoduleThis module is intended to contain previews of an upcoming ownership-aware container model. In this initial release, this module consists of just one construct:
struct Box<T>.Boxis a wrapper type that forms a noncopyable, heap allocated box around an arbitrary value.What's Changed
release/1.1tomainby @lorentey in #248release/1.1tomainby @lorentey in #358OrderedSet.appending(contentsOf:)by @pm-dev in #452SortedCollectionsmodule by @lorentey in #479release/1.2tomainbranch by @lorentey in #487release/1.2by @cthielen in #498pull_request.ymlby @MaxDesiatov in #509Box,RigidArray,DynamicArrayby @lorentey in #508archsub-folder by @Steelskin in #505New Contributors
Full Changelog: apple/swift-collections@1.2.1...1.3.0
v1.2.1: Swift Collections 1.2.1Compare Source
This is a patch release with the following minor improvements:
BigStringsometimes miscounted distances in its character view, resulting in an invalid collection conformance. This is now fixed. (#485)BigString's Unicode Scalar and character views now make better use of known lengths of the text chunks stored in the tree, resulting in significantly improved performance for their distance measurements. (#486)What's Changed
Full Changelog: apple/swift-collections@1.2.0...1.2.1
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