Hori,Masaki masakih
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| %{ | |
| def commaSep(array): | |
| return ', '.join(array) | |
| def closure(n, param): | |
| if n == 1: | |
| return '{ p' + str(len(param) - n) + ' in f(' + commaSep(param) + ') } ' | |
| return '{ p' + str(len(param) - n) + ' in ' + closure(n - 1, param) + '} ' |
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| extension Collection { | |
| func list3() -> [[Element]] { | |
| zip(0..., self).flatMap { (i: Int, e0: Element) -> [[Element]] in | |
| zip((i + 1)..., self[index(startIndex, offsetBy: (i + 1))...]).flatMap { (j: Int, e1: Element) -> [[Element]] in | |
| self[index(startIndex, offsetBy: (j + 1))...].map { (e2: Element) -> [Element] in | |
| [e0, e1, e2] | |
| } | |
| } |
masakih
/ CodePiece.swift
Created
November 3, 2020 01:30
Collectionから取り出した3つの要素の全組み合わせを列挙するやつ #CodePiece
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| extension Collection { | |
| func list3() -> [[Element]] where Index == Int { | |
| zip(0..., self).flatMap { (i: Int, e0: Element) -> [[Element]] in | |
| zip((i + 1)..., self[(i + 1)...]).flatMap { (j: Int, e1: Element) -> [[Element]] in | |
| self[(j + 1)...].map { (e2: Element) -> [Element] in | |
| [e0, e1, e2] | |
| } | |
| } |
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| extension Combine.Future { | |
| convenience init<S: Scheduler>(on scheduler: S, _ attemptToFulfill: @escaping (@escaping Future<Output, Failure>.Promise) -> Void) { | |
| self.init { promise in | |
| scheduler.schedule { | |
| attemptToFulfill(promise) | |
| } | |
| } | |
| } |
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| extension Sequence { | |
| func traverse<T>(_ transform: @escaping (Element) -> AnyPublisher<T, Never>) -> AnyPublisher<[T], Never> { | |
| var index = 0 | |
| return self | |
| .publisher | |
| .flatMap { i -> AnyPublisher<(Int, T), Never> in | |
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| (0...3) | |
| .publisher | |
| .flatMap { i -> AnyPublisher<Int, Never> in | |
| Future<Int, Never> { promise in | |
| DispatchQueue.global().async { | |
| print("start", i, "----", Thread.current) | |
| sleep(UInt32([0, 2, 3, 5].randomElement()!)) | |
| print("end", i) |
masakih
/ CodePiece.swift
Created
October 18, 2020 02:02
こうやると非同期で動くけど（当たり前） sinkが発動しない（意味不明） #CodePiece
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| (0...3) | |
| .map { i -> AnyPublisher<Int, Never> in | |
| Future<Int, Never> { promise in | |
| DispatchQueue.global().async { | |
| print("start", i, "----", Thread.current) | |
| sleep(UInt32([0, 2, 3, 5].randomElement()!)) | |
| print("end", i) | |
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| (0...3) | |
| .map { i -> AnyPublisher<Int, Never> in | |
| Future<Int, Never> { promise in | |
| print("start", i) | |
| sleep(UInt32([0, 2, 3, 5].randomElement()!)) | |
| print("end", 1) | |
| promise(.success(i * 2)) |
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| import Foundation | |
| extension Array { | |
| func binarySearch(_ f: (Element) -> ComparisonResult) -> Element? { | |
| self[...].binarySearch(f) | |
| } | |
| } | |
| extension ArraySlice { | |
| func binarySearch(_ f: (Element) -> ComparisonResult) -> Element? { | |
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| private func contentImage(in rect: CGRect) -> UIImage { | |
| UIGraphicsImageRenderer(bounds: rect) | |
| .image { con in | |
| textField.layer.render(in: con.cgContext) | |
| } | |
| } |