frsyuki

My thoughts on MessagePack

Hi. My name is Sadayuki "Sada" Furuhashi. I am the author of the MessagePack serialization format as well as its implementation in C/C++/Ruby.

Recently, MessagePack made it to the front page of Hacker News with this blog entry by Olaf, the creator of the Facebook game ZeroPilot. In the comment thread, there were several criticisms for the blog post as well as MessagePack itself, and I thought this was a good opportunity for me to address the questions and share my thoughts.

My high-level response to the comments

To the best of my understanding, roughly speaking, the criticisms fell into the following two categories.

hayajo

ChangeLog を支える英語

ChangeLog を書く際によく使われる英語をまとめました。

ほとんど引用です。

基本形

mekwall

const net = require("net");

var server = net.createServer(function (c) {
    var oldWrite = c.write;
    c.write = function(d) {
        if (!Buffer.isBuffer(d)) {
            d = new Buffer(d);
        }
        oldWrite.call(this, d);
        server.bytesSent += d.length;

JFK

user www-data;

#worker_processes 4;
#worker_priority 0;
#worker_cpu_affinity 0001 0010 0100 1000;
#worker_rlimit_nofile 163840;

#worker_processes 8;
#worker_priority 0;
#worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000;

repeatedly

MessagePackが文字列とバイナリをわけないのは問題？

msgpack/msgpack#121

Objective Cの実装使ってるとある問題にぶちあたった．なので，文字列をちゃんとバイナリ(Raw)と分けるべき，という提案

(*) 俺は熟読したわけではないので，中身が気になる人はちゃんと本スレを読みましょう

そもそもMessagePackとは

kawanet

/** カタカナをひらがなに変換する関数
 * @param {String} src - カタカナ
 * @returns {String} - ひらがな
 */

function katakanaToHiragana(src) {
	return src.replace(/[\u30a1-\u30f6]/g, function(match) {
		var chr = match.charCodeAt(0) - 0x60;
		return String.fromCharCode(chr);
	});

bag-man

var os = require("os");

//Create function to get CPU information
function cpuAverage() {

  //Initialise sum of idle and time of cores and fetch CPU info
  var totalIdle = 0, totalTick = 0;
  var cpus = os.cpus();

  //Loop through CPU cores

rtanote

/* 
<!-- xmlns:l="http://schemas.livet-mvvm.net/2011/wpf" -->
<i:Interaction.Triggers>
  <l:InteractionMessageTrigger MessageKey="Error" Messenger="{Binding Messenger}">
    <l:InformationDialogInteractionMessageAction/>
  </l:InteractionMessageTrigger>
</i:Interaction.Triggers>
*/
// ViewModel
try {

focusaurus

const express = require("express");
const router = express.Router();

router.get('/', function (req, res) {
  res.send("This is the '/' route in ep_app");
});

module.exports = router;

onderaltintas

var degrees2meters = function(lon,lat) {
  var x = lon * 20037508.34 / 180;
  var y = Math.log(Math.tan((90 + lat) * Math.PI / 360)) / (Math.PI / 180);
  y = y * 20037508.34 / 180;
  return [x, y]
}
//test
lon= -77.035974
lat = 38.898717