kawaz

// 日本語の声をランダムに1つ選ぶ
const voices = speechSynthesis.getVoices().filter(v=>/^ja-/.test(v.lang))
const voice = voices[Math.floor(voices.length*100000*Math.random())%voices.length]

const ssu = new SpeechSynthesisUtterance()
ssu.lang = 'ja-JP' // 言語
ssu.voice = voice // 発話に使用する音声（未設定の場合lang設定を見て適切な音声が選ばれる
ssu.volume = 1 // 発話の音量 0~1、default=1
ssu.rate = 1 // 発話の速度 0.1~10、default=1 
ssu.pitch = 1 // 発話の音程 0~2、default=1

kawaz

#!/bin/bash
set -e -o pipefail

# HostedZone[].Id を保存
aws route53 list-hosted-zones | jq .HostedZones[].Id -r | tee HostedZoneIds.txt

# 全HostedZoneのRecordSetを取得
while read id; do
  aws route53 list-resource-record-sets --hosted-zone-id "$id"
done <HostedZoneIds.txt | tee rs.json.tmp

kawaz

#!/bin/bash
# コピペで使えてシンプルなやつ （動的なファイルディスクリプタ）
# 2重起動防止
exec {lock}<"$0"; flock -n "$lock" || {
    echo "this script is already running" >&2
    exit 1
}

echo "なにかの処理"

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 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

// 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

　　　　// 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```

kawaz

#!/bin/bash
( set -ex -o pipefail && \
  d="$(mktemp -d)" && \
  cd "$d" && \
  trap "$(printf "rm -rf %q" "$d")" EXIT && \
  curl "https://awscli.amazonaws.com/awscli-exe-linux-$(uname -m).zip" -o awscliv2.zip && \
  unzip awscliv2.zip && \
  sudo ./aws/install --update )

kawaz

#!/bin/bash
# https://gist.github.com/kawaz/5aa9d792798ba49aace14d17b4e68b3e
set -eo pipefail

usage() {
    echo "Usage: $0 subcommand [args]"
    echo "  $0 get [output|input|alert|mute]    get volume settings"
    echo "  $0 set [output|input|alert] 0-100   set volume"
    echo "  $0 set mute [true|false]            set mute status"
    echo "  $0 help                             show this help"