ya-s-u

//: Playground - noun: a place where people can play

import UIKit

protocol ContextInjectable {
    associatedtype Context = Void
    func inject(_: Context)
}

extension ContextInjectable where Context == Void {

ya-s-u

 +------------------------------------------------+
 |                     active                     |
 +------------------------------------------------+
             ^                        |
             |                        |
      didBecomeActive          willResignActive
             |                        |
             |                        v
 +------------------------------------------------+
 |                    inactive                    |

ya-s-u

所得税（国税）

所得税の計算方法

所得税額 = （所得金額（A） － 所得控除額（B）） × 税率 - 税額控除額（C）

• 「所得金額（A）－ 所得控除額（B）」は 課税所得金額 といい、1,000円未満の端数を切り捨てる。

所得税の税率

ya-s-u

interface Done<T> {
    type: 'done';
    result: T;
    tail: string;
};

interface Failed {
    type: 'failed';
};

ya-s-u

import { Prisma } from '@prisma/client'

interface Omit {
  <T extends object, K extends [...(keyof T)[]]>(obj: T, ...keys: K): {
    [K2 in Exclude<keyof T, K[number]>]: T[K2]
  }
}

const omit: Omit = (obj, ...keys) => {
  const ret = {} as {