takasek

function doGet() {
  const notion_token = 'secret_...';
  const database_id = '...';
  const headers = {
    'Content-Type' : 'application/json; charset=UTF-8',
    'Authorization': `Bearer ${notion_token}`,
    'Notion-Version': '2021-05-13',
  };
  const fetched = UrlFetchApp.fetch(`https://api.notion.com/v1/databases/${database_id}/query`, {
    "method" : "post",

takasek

let num = 1 as NSNumber

num === num
//true

(num as Int as NSNumber) === (num as Int as NSNumber)
//false

(num as UInt as NSNumber) === (num as UInt as NSNumber)
//false

takasek

struct A {
    var hoge = "a" {
        didSet { print("fixed", hoge) }
    }

    // たとえmutatingなfuncの中でも、
    mutating func fix() {
        // クロージャの中ではselfの書き換えはできない
        DispatchQueue.main.async {
            self.hoge = "b" // Error: Closure cannot implicitly capture a mutating self parameter

takasek

import Foundation

struct Example {
    let input: String
    let expectation: String
}
// テストケース列挙
let examples: [(String, Example)] = [
    ("1", Example(
        input: """

takasek

// https://github.com/apple/swift/blob/b0f5815d2b003df628b1bcfe94681fec489c9492/stdlib/public/Darwin/Foundation/JSONEncoder.swift#L153
func _convertToSnakeCase(_ stringKey: String) -> String {
    guard !stringKey.isEmpty else { return stringKey }

    var words : [Range<String.Index>] = []
    // The general idea of this algorithm is to split words on transition from lower to upper case, then on transition of >1 upper case characters to lowercase
    //
    // myProperty -> my_property
    // myURLProperty -> my_url_property
    //

takasek

// 汎用コード

struct CustomCodingKey: CodingKey, ExpressibleByStringLiteral {
    let stringValue: String
    let intValue: Int? = nil
    init?(stringValue: String) { self.stringValue = stringValue }
    init?(intValue: Int) { return nil }
    init(stringLiteral value: String) { stringValue = value }
    init(_ value: String) { stringValue = value }
}

takasek

let jsonData = """
    [
        "https://www.apple.com",
        "https://swift.org/blog/",
        "https://github.com/apple/swift/releases/tag/swift 5.2.4-RELEASE"
    ]
    """
    .data(using: .utf8)!
struct SafeURL: RawRepresentable, Decodable {
    let rawValue: String

takasek

// もはや動いていなかったので削除
// 修正していただい版をご利用ください
// https://gist.github.com/jnory/b39cd65508fbaa2fa39ebed932ca47a7

takasek

protocol Entity {
    associatedtype RawIDValue: Hashable
    typealias ID = EntityID<Self>
}

struct EntityID<E: Entity>: RawRepresentable, Hashable {
    let rawValue: E.RawIDValue
}
extension EntityID {
    init(_ value: E.RawIDValue) {

takasek

class Cat: NSObject {
    @objc func bark() { print("meow") }
    func hoge() {}
}
class Dog: NSObject {
    @objc func bark() { print("bow-wow") }
    func hoge() {}
}

let cat = Cat()