kawaz

/**
 * a以上b以下の整数の乱数を生成する
 * @param {number|bigint} a 
 * @param {number|bigint} b 
 * @returns {number|bigint}
 */
function getRandomIntBetween(a, b) {
    if (b < a) {
        // [a, b] = [b, a]
        const t = a; a = b; b = t;

kawaz

// タイムアウト付き setInterval
const setIntervalTimeout = (f, interval = 200, timeout = 5000, immediate = false) => {
  immediate && setTimeout(f, 0)
  const i = setInterval(f, interval)
  const t = setTimeout(() => clearInterval(i), timeout)  
  return () => { clearInterval(i); clearTimeout(t) }
}
// タイムアウト付き setInterval の強化版（タブがバックグラウンドになってもサボらない）
const setIntervalTimeoutSuper = (f, interval = 200, timeout = 5000, immediate = false) => {
  try {

kawaz

const beep = (duration=200, frequency=440, gain=1.0) => new Promise((resolve, reject) => {
  try {
    const audioCtx = new AudioContext()
    const oscNode = new OscillatorNode(audioCtx, {frequency, type:"square"})
    const gainNode = new GainNode(audioCtx, {gain})
    oscNode.onended = resolve
    oscNode.connect(gainNode).connect(audioCtx.destination)
    oscNode.start(audioCtx.currentTime)
    oscNode.stop(audioCtx.currentTime + duration / 1000)
  } catch(err){

kawaz

const movingAverageFilter = (ws=3) => {
    if(!Number.isInteger(ws) || ws < 1) {
        throw new Error(`Invalid window size. ws must be >=1. You entered: ws=${ws}.`)
    }
    let win = []
    let sum = 0
    let pos = 0
    let tail = 0
    return (head) => {
        sum = sum + head - tail

kawaz

// const q = (s,r)=>[...(r||document).querySelectorAll(s)];

const q = (selector,root) =>
  selector.split(/::shadow\s*/)
    .reduce((parents,selector,idx) =>
      parents.flatMap(parent =>
        selector=="" ? (idx==0?parent:parent.shadowRoot) : [...(idx==0?parent:parent.shadowRoot).querySelectorAll(selector)]
      )
      , [root||document]
    )

kawaz

// CloudFront Functions 内で利用可能なBASE64実装

function b64enc(b) {
    var b64codes = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".split("").map(s=>s.charCodeAt(0))
    var pad = [0, 2, 1][b.length % 3]
    // 入力バイト列（本来は 0xFF を超える charCode が含まれていたらエラーにすべきだが省略
    var bCodes = (b + '\0'.repeat(pad)).split("").map(s=>s.charCodeAt(0))
    // 出力用バイト列
    var aCodes = new Uint8Array(bCodes.length / 3 * 4)
    for(var i=0,j=0; i<b.length; i+=3,j+=4){

kawaz

#!/usr/bin/swift
import AppKit
let urls = CommandLine.arguments.dropFirst(1).map { URL(fileURLWithPath: $0) }
NSWorkspace.shared.activateFileViewerSelecting(urls)

kawaz

if "test ! -d ~/.tmux/plugins/tpm" \
   "run 'git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm'"

kawaz

const toCodeUnit = s => s.split("").map(u => `\\u${u.charCodeAt(0).toString(16).toUpperCase().padStart(4, 0)}`).join("")
const toCodePoint = s => [...s].map(p => `\\u{${p.codePointAt(0).toString(16).toUpperCase()}}`).join("")
const splitToVisualChars = s => [...s].reduce((c, p, i, a) => {
    let description = p
    if (p == "\u200D") {
        // ZERO WITH JOINER
        description = "ZWJ"
    } else if ("\u{180B}" <= p && p <= "\u{180D}") {
        // モンゴル文字専用のモンゴル自由字形選択子(3個)
        description = `FVS${p.codePointAt(0) - 0x180B + 1}`

kawaz

　　　　// おまじない
  ᡸ=ᡸᡸ=>ᡸ

　　　　// SyntaxErrorはもちろん、ランタイムエラーすら出さずに実行可能
ᡸ```
ᡸhi
ᡸ```