I created the app that generates a handwritten image with CoreML on iOS. I'm going to explain the process to release this app from beginning to end. The software versions Xcode 9.2 (9C40b) Docker 17.09.1-ce TensorFlow docker imagesha256:1b…

First, write native code you used for iOS. Read this document I needed to write native code for the In-App Purchase on iOS. Then, just put your native code in the Assets/Plugins/iOS directory. The hierarchy like this; For example, using Ob…

I participated in ISUCON for the first time. I acquired some knowledge to find out bottleneck in HTTP server and MySQL. Our team used alp for HTTP response analysis and pt-query-digest for MySQL slow query analysis. I try to introduce thes…

I implemented GANs(Generative Adversarial Networks) because I want to learn about GANs with TensorFlow. I referred to here. And this is my code implemented GANs. This code almost same what I referred. My GANs repeatedly learn with MNIST ha…

I went to iOSDC 2017 on September 17th. This conference held for iOS developers on September from 16th to 17th at Waseda University. I heard these sessions: 飛び道具ではないMetal This session told us how to use Metal to render an image on …

I participated CEDEC 2017 from August 30th to September 1st in Yokohama. The conference is the first time I went to DECEC that is held every year as far as I know. All participants engage in game developing. I look at below sessions. Day 1…

I've been reading SOFT SKILLS ソフトウェア開発者の人生マニュアル(Japanese version) of "Soft Skills". I've made sense implicitly this method before I read the book. I found the chapter "Learning how to learn" that is helpful. So I try to in…

I read this tutorial. There were the confusing terms they are tf.placeholder and tf.Variable. So I checked the difference point. tf.placeholder is called when a session runs a calculation. If once you set a value with tf.placeholder, it ca…

Index Key Prefix Length Limitation on InnoDB I encountered the problem index key prefix length limitation on InnoDB when I migrate a database. The problem was like this: Specified key was too long; max key length is 767 bytes The index key…

I went to builderscon tokyo 2017 from August 3rd to 5th. The eve of the conference I heard some fascinating talks, but I was told not to tell anyone about them, so unfortunately I can't write about them. I think the organizers should keep …

I joined a project, and I begin to develop an application in it. This project has used golang. So I studied it and prepared its developing environment. This article is the what I did to make development environment of GO. Prerequisite Inst…

Ubuntu 16.04 and every other use UTC by default. I want to change to JST. So I search about this on the web, and some site said to use like this. Show list of time zone $ timedatectl list-timezones But I executed this command, and then abo…

Immutable.jsのListのmerge()でListを結合できると思っていたら違った。 const a = Immutable.List([ {item_name: 'apple'}, {item_name: 'chicken'} ]) const b = Immutable.List([ {item_name: 'car'} ]) こんな感じでリストがあって結合したいと思ったと…

すでにPlay Framework 2.6が公開されていますが、Play Framework 2.5の設定方法について少しまとめておきます。 Play Frameworkの設定はデフォルトではapplication.confに書くようになっています。 application.confには何を書くか DBやAkkaアクター、ログや…

Docker Swarmのservice間で名前解決して互いにネットワークアクセスできるように設定する方法です。 使用したDocker engineのバージョンは 1.13.0 です。 service discoveryを使用する service discovery を使用するとservice名で名前解決できるようになりま…

基本的にドキュメントに書いてありまが、Docker RegistryでHTTPを使おうとすると少し面倒だったので、まとめておきます。 プライベートなネットワークで使っているぶんにはHTTPで十分ですが、いくつか設定を追加する必要があります。 Docker Registryを起動…

概要 Docker Swarmで複数のコンテナがあると、コンテナが起動している複数のnodeに入ってdocker logsは大変です。2台や3台程度であればdocker logsで十分かもしれませんが、5台やそれ以上になると大変です。 また、一番大きい問題としてコンテナのログはappl…

Docker containerから外部へのアクセスができなくなった時の原因と直し方です。 何が起こったか centosをリスタートかsystemctl restart network.serviceすると net.ipv4.conf.all.forwarding が 0 になってしまいます。 $ sysctl net.ipv4.conf.all.forward…