pofat

// Kind of type
public enum Kind {
    case `struct`
    case `enum`
    case optional
    case opaque
    case tuple
    case function
    case existential
    case metatype

pofat

/// iOS 15+
func isPrewarm() -> Bool {
    if let prewawrmEnv = ProcessInfo.processInfo.environment["ActivePrewarm"],
       prewawrmEnv == "1" {
        return true
    } else {
        return false
    }
}

pofat

fastlane_version "2.50.1"

default_platform :ios

platform :ios do
  before_all do
    # ENV["SLACK_URL"] = "https://hooks.slack.com/services/..."
    # cocoapods

  end

pofat

// 會帶真實型別進去
func doSomething<T: MyPotocol>(_ arg: T) { }
// 有 existentail container
func doSomething(_ arg: MyProtofcol) { }

pofat

import Foundation

// struct for printing out instance address
struct MemoryAddress<T>: CustomStringConvertible {

    let intValue: Int
    var description: String {
        let length = 2 + 2 * MemoryLayout<UnsafeRawPointer>.size
        return String(format: "%0\(length)p", intValue)
    }

pofat

protocol FooDelegate: AnyObject {
  func didReceive(value: Int)
  func didOpen()
  func didClose()
}

class Foo {
  weak var delegate: FooDelegate?

  func open() {

pofat

import ComposableArchitecture
import SwiftUI

struct <#Name#>State: Equatable {}

enum <#Name#>Action: Equatable {}

struct <#Name#>Environment {}

extension <#Name#>Environment {

pofat

import Combine
import CombineExt // Check this implementation: https://github.com/CombineCommunity/CombineExt/blob/main/Sources/Operators/Create.swift
import CoreBluetooth 

// Client to generate target delegate publisher
// Learned from https://github.com/pointfreeco/composable-core-location/blob/main/Sources/ComposableCoreLocation/Live.swift
struct PeripheralClient {
    enum Action: Equatable {
        case didUptateName

pofat

protocol P {
   associatedtype A
   associatedtype B
 }

 protocol Q: P {}

 extension Q where A == Int {
   typealias B = Int
 }

pofat

enum Either<A, B> {
    case left(A)
    case right(B)
}

extension Either: Decodable where A: Decodable, B: Decodable {
    init(from decoder: Decoder) throws {
        let container = try decoder.singleValueContainer()
        if let a = try? container.decode(A.self) {
            self = .left(a)