Code

Incubate persistent data structures#31

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Merged

lorentey merged 176 commits intoapple:feature/PersistentCollectionsapple/swift-collections:feature/PersistentCollectionsfrom msteindorfer:capsule-collectionsmsteindorfer/swift-collections:capsule-collectionsCopy head branch name to clipboardSep 7, 2022

Commits

Commits on Aug 9, 2022

• [Capsule] Import sources

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• [Capsule] Add package configuration

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• [Capsule] Adhere to CollectionsTestSupport in test code

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• [Capsule] Increase visibility of count and subscript to public

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• [Capsule] Update copyright headers

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• [Capsule] Split HashMap extensions into separate files

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• [Capsule] Rename Common.swift -> _Common.swift

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• [Capsule] Split nested structs and classes into separate files

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• [Capsule] Harmonize identation

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• [Capsule] Update copyright headers

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• [Capsule] Remove unused XCTest import

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• [Capsule] Implement Hashable extension for HashMap

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• [Capsule] Rename and simplify smoke tests

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• [Capsule] Implement preliminary hash-collision resolution

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• [Capsule] Make spine of trie monomorphic

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• [Capsule] Make copyAndSetNode generic

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• [Capsule] Implement Equatable protocol

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• [Capsule] Update copyright headers

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• [Capsule] Add support for Copy-On-Write

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• [Capsule] Fix Copy-On-Write semantics for nested nodes

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• [Capsule] Add test functions for feature exploration

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• [Capsule] Use overflowing bit-wise operations

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• [Capsule] Use larger chunk size for more shallow tries

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• [Capsule] Generalize bitmap usage with typealias

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• [Capsule] Prepare introduction of collMap

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• [Capsule] Rework hash-collision logic based on monomorphic trie nodes

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• [Capsule] Adopt Swift naming convention for chaining methods

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• [Capsule] Make test case deterministic

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• [Capsule] Improve == for CollidableInt and fix white-space issues

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• [Capsule] Experiment with any nodes API

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• [Capsule] Fix compaction upon delete with SizePredicate

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• [Capsule] Add special case iterator test

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• [Capsule] Made iterators aware of node enum type

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• [Capsule] Remove redundant MapNode protocol overrides

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• [Capsule] Rename hash collision node API in Node protocol

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• [Capsule] Rename bitmap indexed node API in Node protocol

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• [Capsule] Rename generic node API in Node protocol

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• [Capsule] Clean-up associated types

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• [Capsule] Rename AnyNode to TrieNode

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• [Capsule] Clean-up method names

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• [Capsule] Name payload tuple components

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• [Capsule] Add precondition violation error message

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• [Capsule] Remove outdated comment

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• [Capsule] Clean-up TrieNode enum

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• [Capsule] Update copyright headers

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• [Capsule] Add convenience initializer for BitmapIndexedMapNode

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• [Capsule] Introduce convenience constructors for BitmapIndexedMapNode

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• [Capsule] Rework merge functions

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• [Capsule] Avoid wrapping if conditions in parentheses

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• [Capsule] Put colons next to identifiers

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• [Capsule] Remove trailing whitespace

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• [Capsule] Resolve various code style issues

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• [Capsule] Rephrase return statement

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• [Capsule] Use guard statements for bitmap case distinctions

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• [Capsule] Use guards to check effects

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• [Capsule] Make dual nature of update/remove methods explicit

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• [Capsule] Fix test case

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• [Capsule] Add test for hash-collision compaction

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• [Capsule] Fix hash-collision compaction scenario

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• [Capsule] Explode condition

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• [Capsule] Fix code style issues in test case

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• [Capsule] Add helpers for hash-collision compaction

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• [Capsule] Extend BitmapIndexedMapNode with Sequence protocol

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• [Capsule] Copy DictionaryBenchmark and add some Dictionary API

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• [Capsule] Use mutable API inside initializer

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• [Capsule] Deduplicate ExpressibleByDictionaryLiteral implementation

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• [Capsule] Turn some preconditions into asserts

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• [Capsule] Add inline annotations to initializer

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• [Capsule] Add init(uniqueKeys keys: Keys, values: Values)

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• [Capsule] Add tuple labels to iterator return values

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• [Capsule] Add underestimatedCount

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• [Capsule] Copy base of OrderedDictionary tests

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• [Capsule] Fix tests for unordered collections

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• [Capsule] Add CustomStringConvertible conformance

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• [Capsule] Extract class CollidableInt from smoke tests

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• [Capsule] Add CustomDebugStringConvertible conformance to CollidableInt

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• [Capsule] Enable test_CustomStringConvertible

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• [Capsule] Enable more initializer tests

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• [Capsule] Extend copy-on-write optimizations

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• [Capsule] Add benchmark helper script

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• [Capsule] Move allocation out of isTrieNodeKnownUniquelyReferenced

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• [Capsule] Experiment unifying node getter with uniqueness check

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• Revert "[Capsule] Experiment unifying node getter with uniqueness check"

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• [Capsule] Trim down bitmap size

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• [Capsule] Use count as guidance for duplication checks

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• [Capsule] Specialize initializers

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• [Capsule] Extract calls to isKnownUniquelyReferenced

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• [Capsule] Add typealias for backend storage type

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• [Capsule] Benchmark with -Ounchecked to ignore bounce checks hit, etcetera

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• [Capsule] Check content invariant

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• [Capsule] Fix indentation

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• [Capsule] Reduce to one content slot per key/value tuple

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• [Capsule] Simplify isKnownUniquelyReferenced logic

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• [Capsule] Use rounded(.up) from standard library over Foundation.ceil

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• [Capsule] Avoid copyAndSetBitmapIndexedNode on equal references when updating

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• [Capsule] Hack minimal example for constructing a trie

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• [Capsule] Hack minimal (continued)

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• [Capsule] Finalize ManagedBuffer rework

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• [Capsule] Add header helpers for imploding/exploding

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• [Capsule] Introduce withUnsafeMutablePointerRanges

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• [Capsule] Simplify bitmap processing

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• [Capsule] Convert Header from tuple to struct

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• [Capsule] Use withUnsafeMutablePointerRanges over alternative APIs

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• [Capsule] Relocate range copy and edit functions

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• [Capsule] Avoid returning closure pointer

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• [Capsule] Make range functions generic

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• [Capsule] Use fixedTrieCapacity and rebind to AnyObject

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• [Capsule] Name correctly usages of trieRange

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• [Capsule] Fix invariant references

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• Revert "[Capsule] Use fixedTrieCapacity and rebind to AnyObject"

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• Revert "Revert "[Capsule] Use fixedTrieCapacity and rebind to AnyObject""

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• [Capsule] Bind trieRange with unsafe

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• [Capsule] Make fixedTrieCapacity adjustable to bitmap format

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• [Capsule] Rework buffer to use UnsafeMutableRawPointer

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• [Capsule] Replace buffer with baseAddress references

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• [Capsule] Unclutter segment counts

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• [Capsule] Clean-up comments and unused constants

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• [Capsule] Use provided hasher argument

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• [Capsule] Remove unused key set hash code

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• [Capsule] Make alignment calculation robust

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• [Capsule] Ensure object layout of Node is class reference

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• [Capsule] Convert to unsigned bitmap type

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• [Capsule] Make ReturnPayload binding explicit

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• [Capsule] Remove alternatives that have undefined behavior

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• [Capsule] Make get internal in favor of subscript

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• [Capsule] Fix heap buffer overflow issue during deletion

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• [Capsule] Draft benchmark configuration

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• [Capsule] Make ReturnPayload binding explicit in hash collision node

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• [Capsule] Rework MapKeyValueTupleIterator

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• [Capsule] Pin type to Capsule hash-map

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• [Capsule] Remove reserveCapacity test since it is not supported

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• [Capsule] Add [COW] subscript, insert benchmark

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• [Capsule] Rename HashMap to PersistentDictionary

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• [Capsule] Remove outdated Capsule benchmark helper

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• [Capsule] Add [COW] subscript, remove existing benchmark

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• [Capsule] Constrain capacity type

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• [Capsule] Add preliminary support for shrinking

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• [Capsule] Add placeholders for missing Dictionary protocols

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• [Capsule] Provide skeletons for keys and values views

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• [Capsule] Add basic implementation of PersistentDictionary.Index type

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Commits on Aug 12, 2022

• [Capsule] Add bitmap to sequence converters

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Commits on Aug 19, 2022

• [Capsule] Exemplify enumeration of compacted array

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• [Capsule] Add sequence representations for slices

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Commits on Sep 2, 2022

• [Capsule] Add persistent dictionary index benchmarks

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• [Capsule] Add Equatable smoke test for a special case

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• [Capsule] Backout explicit collision bitmap to simplify codebase

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• [Capsule] Simplify initializers

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• [Capsule] Replace top-level cachedSize with per node count

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• [Capsule] Replace sizePredicate usage by count

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• [Capsule] Convert to TrieNode content and add specialized index

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• [Capsule] Revert to AnyObject node representation

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• [Capsule] Add specialized subscript(position: Self.Index) method

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• [Capsule] Reduce expensive invariant check that slow down testing

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• [Capsule][WIP] Return to monomorphic spine

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Commits on Sep 5, 2022

• [Capsule] Add BitmapIndexedDictionaryNode: CustomDebugStringConvertible skeleton

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• [Capsule] Add BitmapIndexedDictionaryNode: CustomStringConvertible skeleton

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• [Capsule] Add smoke test for larger hash-collision nodes

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• [Capsule][WIP] Return to monomorphic spine, continued

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• [Capsule] Enable Keys and Values view benchmarks

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• [Capsule] Use non-materializing data/trie slice views in iterator

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• [Capsule] Rename base iterators

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• [Capsule] Remove not necessary type alias

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Commits on Sep 6, 2022

• [Capsule] Add init(uncheckedUniqueKeysWithValues:) benchmark

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• [Capsule] Fix TODO comment

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• [Capsule] Implement BitmapIndexedDictionaryNode: CustomStringConvertible

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• [Capsule] Rename package to PersistentCollections

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• [Capsule] Simplify insertion methods

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• [Capsule] Simplify deletion methods

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  7ea47d7

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• [Capsule] Unify insertion/deletion methods

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• [Capsule] Remove unchecked variant of initializer

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• [Capsule] Remove comment after check

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• [Capsule] Fix test case argument label

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• [Capsule] Add subscript(position:) benchmarks

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• [Capsule] Expand index(forKey:) tests

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• [Capsule] Remove non-applicable tests

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• [Capsule] Clean-up annotations

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