ole

import SwiftUI

extension View {
    /// Proposes a percentage of its received proposed size to `self`.
    ///
    /// This modifier multiplies the proposed size it receives from its parent
    /// with the given factors for width and height.
    ///
    /// If the parent proposes `nil` or `.infinity` to us in any dimension,
    /// we’ll forward these values to our child view unchanged.

beesandbombs

float[][] result;
float t, c;

float ease(float p) {
  p = c01(p);
  return 3*p*p - 2*p*p*p;
}

float ease(float p, float g) {

jtrivedi

func scrollViewDidScroll(_ scrollView: UIScrollView) {
    for (i, view) in scrollView.subviews.enumerated() {
        var ty = 0.0
        if scrollView.contentOffset.y < 0 {
            // We're scrolling past the top of the scroll view.
            // Translate each item in the scroll view by some amount based on its index and scroll offset.
            ty = CGFloat(i) * abs(offsetY) / 8.0 * pow(1.12, CGFloat(i))
        }
        view.transform = CGAffineTransform(translationX: 0, y: ty)
    }

maximkrouk

// - Depends on https://github.com/swift-declarative-configuration
// - Depends on https://github.com/swift-foundation-extensions
// - Depends on https://gist.github.com/maximkrouk/942125396a857e49203ddb933d557c31

import UIKit
import FoundationExtensions
import DeclarativeConfiguration

fileprivate extension UIView {
	func pinToSuperview() {

keith

Usage

1. swiftc main.swift -emit-module-path main.swiftmodule -emit-executable -enable-private-imports -Xfrontend -enable-implicit-dynamic
2. ./main -> prints From original bar()
3. swiftc -emit-library inject.swift -o inject.dylib -I . -Xlinker -undefined -Xlinker suppress -Xlinker -flat_namespace -Xfrontend -disable-access-control
4. DYLD_INSERT_LIBRARIES=inject.dylib ./main -> prints From replacement bar()

Notes

• Passing -Xfrontend -enable-implicit-dynamic removes you from having to add dynamic to everything you want to be replacable

zntfdr

// Original article here: https://fivestars.blog/swiftui/swiftui-share-layout-information.html

import SwiftUI

extension View {
  func readSize(onChange: @escaping (CGSize) -> Void) -> some View {
    background(
      GeometryReader { geometryProxy in
        Color.clear
          .preference(key: SizePreferenceKey.self, value: geometryProxy.size)

IanKeen

extension Publisher {
    func asResult() -> AnyPublisher<Result<Output, Failure>, Never> {
        return map(Result.success)
            .catch { Just(Result.failure($0)) }
            .eraseToAnyPublisher()
    }
}

extension Publisher {
    func values<S, F: Error>() -> AnyPublisher<S, Never> where Output == Result<S, F>, Failure == Never {

RuiAAPeres

import ReactiveSwift
import XCTest

private let counterFailure: (Int, Int) -> String = { count, maxCount in
  return "Counter is currently at \(count) which higher than the max \(maxCount)"
}

private let timeoutFailure = "Expectation timeout"

private let infoTemplate: (String, String, Int) -> String = { fileName, functionName, lineNumber in

wotjd

import SwiftUI

// https://medium.com/@lyeskinnikitaalexandrovich/mastering-xcode-previews-with-snapkit-uikit-aa82a146059a
enum DebugPreviewLayout {
  case fitWidth(CGFloat)
  case fitHeight(CGFloat)
  case `default`
}

final class DebugPreviewLayoutView: UIView {

nunogoncalves

import Foundation

enum BetterDecodingError: CustomStringConvertible {

    case dataCorrupted(_ message: String)
    case keyNotFound(_ message: String)
    case typeMismatch(_ message: String)
    case valueNotFound(_ message: String)
    case any(_ error: Error)