JadenGeller

// import https://gist.github.com/JadenGeller/66585051f8de54d9f2a3df1acfd87c32#file-pinnedcollection-swift
import DequeModule

struct AdaptiveRangeBuffer<Index: Strideable, Element>: RandomAccessCollection, MutableCollection where Index.Stride == Int {
    var storage: PinnedCollection<Deque<Element>, Index>
    var defaultValue: (Index) -> Element
    var willRemoveRange: (Slice<Self>) -> Void

    init(indices: Range<Index>, defaultValue: @escaping (Index) -> Element, willRemoveRange: @escaping (Slice<Self>) -> Void = { _ in }) {
        self.defaultValue = defaultValue

JadenGeller

extension PHPhotoLibrary {
    // RADAR: https://feedbackassistant.apple.com/feedback/13660931
    func withTemporarilyUnhiddenAssets<Success>(_ assets: [PHAsset], _ block: () async throws -> Success) async throws -> Success {
        var collectionPlaceholder: PHObjectPlaceholder?
        try await performChanges {
            let collectionChange = PHAssetCollectionChangeRequest.creationRequestForAssetCollection(withTitle: "Temporarily Unhidden Assets")
            collectionPlaceholder = collectionChange.placeholderForCreatedAssetCollection
            collectionChange.insertAssets(assets as NSArray, at: IndexSet((0...).prefix(assets.count)))
            for asset in assets {
                precondition(asset.isHidden)

JadenGeller

actor RequestBatcher<Request, Response> {
    var maxBatch: Int
    var maxDelay: Duration
    var priority: TaskPriority?
    var dispatchBatch: ([Request]) async -> [Result<Response, Error>]
    init(maxBatch: Int, maxDelay: Duration, dispatchBatch: @escaping ([Request]) async -> [Result<Response, Error>]) {
        self.maxBatch = maxBatch
        self.maxDelay = maxDelay
        self.dispatchBatch = dispatchBatch

JadenGeller

protocol PipelineStep {
    associatedtype Context
    associatedtype Downstream: PipelineStep
    func step(with context: Context) async throws -> Downstream
}

protocol IdleCheckablePipelinewStep: PipelineStep {
    var isIdle: Bool { get }
}

JadenGeller

extension RandomAccessCollection {
    /// A sequence that partitions a sorted collection into non-overlapping segments based on a sorted sequence of boundaries.
    ///
    /// If N bounds are provided, the resulting sequence contains N + 1 segments, since the segment before the first boundary
    /// and the segment after the last boundary are both included.
    ///
    /// - Parameter bounds: A sequence of bounds used to partition the collection.
    /// - Parameter areInIncreasingOrder: A predicate that determines whether an element should be included
    ///   in the segment before the boundary.
    /// - Returns: A sequence of collection subseqences partitioned by the given bounds.

JadenGeller

import SwiftUI
import UniformTypeIdentifiers

struct FileDragProvider: NSViewRepresentable {
    var filePromise: FilePromise
    var preview: PlatformImage
    
    class NSViewType: NSView, NSFilePromiseProviderDelegate, NSDraggingSource {
        var filePromise: FilePromise
        var preview: PlatformImage

JadenGeller

public protocol UnificationSystemProtocol {
    associatedtype Variable
    mutating func makeFreshVariable() -> Variable
    mutating func canonicalVariable(for variable: Variable) -> Variable
    @discardableResult 
    mutating func unify(_ first: Variable, _ second: Variable) -> Bool
}

public struct UnificationSystem: UnificationSystemProtocol {
    public typealias Variable = Int

JadenGeller

protocol Lattice {
    static func join(_ lhs: Self, _ rhs: Self) -> Self
    static func meet(_ lhs: Self, _ rhs: Self) -> Self
}

extension Lattice {
    mutating func join(with other: Self) {
        self = .join(self, other)
    }
    mutating func meet(with other: Self) {

JadenGeller

struct BufferLoader {
    var buffer: UnsafeRawBufferPointer
    var byteOffset: Int = 0
    
    mutating func loadUnaligned<T>(as type: T.Type) -> T {
        defer { byteOffset += MemoryLayout<T>.size }
        return buffer.loadUnaligned(fromByteOffset: byteOffset, as: T.self)
    }
}
extension UnsafeRawBufferPointer {

JadenGeller

actor Semaphore {
    private var capacity: Int {
        didSet {
            assert(capacity >= 0)
        }
    }
    struct Waiter {
        var priority: TaskPriority
        var continuation: CheckedContinuation<Void, Never>
    }