https://labs.yulrizka.com/ Recent content on Hugo -- gohugo.io Sun, 07 Jun 2020 17:09:57 +0200 https://labs.yulrizka.com/en/my-desktop-with-i3-polybar-conky-rofi/ Sun, 07 Jun 2020 17:09:57 +0200 https://labs.yulrizka.com/en/my-desktop-with-i3-polybar-conky-rofi/ This weekend i’ve been playing with my i3 desktop settings. Here are the result Made with: Window Manager: i3 Background: Ori Color Scheme: Nord Polybar: adi1090x/polybar-themes-8 Conky: conky https://labs.yulrizka.com/en/convert-intellij-live-template-to-vscode/ Thu, 21 May 2020 19:31:50 +0200 https://labs.yulrizka.com/en/convert-intellij-live-template-to-vscode/ If you are in the need of converting your custom intellij live tempate, you can use this method to transform it. Locate the template file The first thing you need to is is to locate the template file. You can find it inside the intellij settings directory which is vary per operating system. See this documentation to locate it. For example for my golang templte in linux, I find it under https://labs.yulrizka.com/en/why-for-range-behave-differently-depending-on-the-size-of-the-element/ Sat, 25 Apr 2020 15:47:49 +0200 https://labs.yulrizka.com/en/why-for-range-behave-differently-depending-on-the-size-of-the-element/ It’s all started when my colleague asked this question. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 package main import "testing" const size = 1000000 type SomeStruct struct { ID0 int64 ID1 int64 ID2 int64 ID3 int64 ID4 int64 ID5 int64 ID6 int64 ID7 int64 ID8 int64 } func BenchmarkForVar(b *testing. https://labs.yulrizka.com/en/testing-go-1-dot-5-cross-compilation/ Sat, 29 Aug 2015 17:28:00 +0200 https://labs.yulrizka.com/en/testing-go-1-dot-5-cross-compilation/ I’m so excited with the new release of golang. One particular feature is now very easy to build for multiple architecture. If you seen my other posts, I also like to tinker with my raspberry-pi. On my previous project I use either ruby or python for building some stuff. One annoying thing is dependency, setup and compilation is usually quite slow. Would be cool if I could just create some stuff in desktop and just scp the binary to pi and everything should work! https://labs.yulrizka.com/en/osx-push-to-talk-app/ Sun, 22 Mar 2015 00:26:00 +0200 https://labs.yulrizka.com/en/osx-push-to-talk-app/ Push To Talk app for OSX PushToTalk App installer As a part of scrum teams, every day I need to give updates to my team via Google Hangout. We have a team here in the Netherlands and also in Indonesia. Some times I am in the same room as a colleague of mine. This sometimes quite annoying because I can hear my self (with a delay) from his mic. https://labs.yulrizka.com/en/tracking-origin-of-bugs-with-git-bisect/ Fri, 16 Jan 2015 23:35:00 +0200 https://labs.yulrizka.com/en/tracking-origin-of-bugs-with-git-bisect/ Disect the rocket, image by ProudloveNathan Proudlove I’ve been involved with a iOS project this past week. I’m adding functionalities to the CommonSense iOS library. One of the most annoying thing is that it took about 2 minute to load the project. This is only happened in the unstable branch. The master branch seems to be working fine. So I knew that somewhere there is a commit when this starts happening. https://labs.yulrizka.com/en/stubbing-time-dot-now-in-golang/ Mon, 27 Oct 2014 16:42:00 +0200 https://labs.yulrizka.com/en/stubbing-time-dot-now-in-golang/ Sometimes it’s really hard to test functionality that involve with system time. Especially when we want to test the function with a specific time. For example testing whether today is end of month or test 2 different behavior at a different time Below we look into different ways we can mock or stub the time. Each with it’s own advantages and disadvantages. Passing the time instance 1 2 3 4 5 6 7 8 9 10 11 12 func CheckEndOfMonth(now time. https://labs.yulrizka.com/en/my-account-just-got-hacked-by-romanian-possibly/ Sat, 27 Jul 2013 11:58:00 +0200 https://labs.yulrizka.com/en/my-account-just-got-hacked-by-romanian-possibly/ You are probably familiar with above images. Some random friend sent you an email which you can instantly recognize as a spam because it only contains one link. Couple days ago I receive this email which is not the first time for me. But this time it was different. It actually came from my own Yahoo! account which I never use since more that one year ago. My first instinct is to check whether the mail really got sent from my account or it just spoofing my email address. https://labs.yulrizka.com/en/berks-upload-ruby-core-dump/ Sun, 21 Jul 2013 23:26:00 +0200 https://labs.yulrizka.com/en/berks-upload-ruby-core-dump/ Berksfhel is cookbook dependency for chef. If you are familiar with ruby / python, think of it as a Bundler or virtual environment for chef I faced this core dump error while doing berks upload. That command will actualy push some cookbook to a chef server. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 $ berks upload /home/user/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/celluloid-0.14.1/lib/celluloid/tasks.rb:47: [BUG] Segmentation fault ruby 1. https://labs.yulrizka.com/en/safely-sharing-credentials-with-pgp/ Mon, 08 Jul 2013 16:24:00 +0200 https://labs.yulrizka.com/en/safely-sharing-credentials-with-pgp/ When working in teams, we are sometimes required to share some password / keys with our team. The most common way for me is probably through email or some chat client. But even though its convenience it’s not actually a secure and a good practice. Especially if you are providing a service that deal with sensitive information. Some simple approach would we communicating the password directly with a person through secure medium. https://labs.yulrizka.com/en/homeward-light-indicator-with-raspberrypi-and-commonsense/ Tue, 26 Feb 2013 20:33:00 +0200 https://labs.yulrizka.com/en/homeward-light-indicator-with-raspberrypi-and-commonsense/ I've been tinkering with my [raspberry-pi][raspberry-pi] for quite some time now. What I like about it because it is cheap ($25), it's run Linux (especially debian based) and most of all it's have General Purpose Input Output pin. Since I was a kid, I always wanted to control electronic appliance remotely. Luckily my friend [@pimnijdam][pimnijdam] thought me how to control a relay board. Basically it's just like an electric switch that connect/disconnect current when you supply a low voltage. https://labs.yulrizka.com/en/responsive-design/ Fri, 24 Feb 2012 01:48:00 +0200 https://labs.yulrizka.com/en/responsive-design/ I’ve been playing around with twitter bootstrap. It’s like a css framework to help designer or developer create a nice and clean site. It’s offer grid system, predefine layout, button, javascript, carousel etc. You can build website in just a few hours. Very nice for prototyping. I’ve been using it to build this blog since it was version 1. Recently i had a chance to upgrade it to version 2. The new version offer a lot of functionalities, one the feature that I play a lot is the responsive design. https://labs.yulrizka.com/en/jekyll-error-utf-8-caracter/ Sat, 14 Jan 2012 17:32:00 +0200 https://labs.yulrizka.com/en/jekyll-error-utf-8-caracter/ If you having a problem in jekyll when it didn’t generate a post and there is no error in the log file. you might want to check the content if there is any UTF-8 character encoding such as this ± The problem arise if you use ruby 1.9. It rejecting a file that contain non-ASCII character. it actually got invalid multibyte char (US-ASCII) error message to solve this. I added this line to . https://labs.yulrizka.com/en/testing-ruby-code-with-benchmark-suite/ Sat, 14 Jan 2012 12:05:00 +0200 https://labs.yulrizka.com/en/testing-ruby-code-with-benchmark-suite/ Just a couple days ago I found out therubygame.com which challenge us to solve a problem with ruby. The result were measured by the fastest, slowest, shortest, longest, cheaters (yup there are also some rule). And also I was listening to an episode of ruby rouge on Benchmarking. And there is one tools called benchmark_suite. So there is this challenge to capitalize first letter of every word. I want to compare my code to the fastest solution there. https://labs.yulrizka.com/id/ruby-fiber-apaan-sih/ Mon, 01 Jan 0001 00:00:00 +0000 https://labs.yulrizka.com/id/ruby-fiber-apaan-sih/ Fibers are light-weight (green) threads with manual, cooperative scheduling, rather than the preemptive scheduling of Ruby 1.8's threads. Since Ruby 1.9's threads exist at the system level, fibers are, in a way, Ruby 1.9's answer to Ruby 1.8's green threads, but lacking the pre-emptive scheduling rubyinside.com Thread Untuk dapat mengerti mengenai fiber, sebelumnya kita harus memahami thread. Suatu (*instance*) program yang sedang berjalan disebut dengan proses. https://labs.yulrizka.com/id/scale-mongodb-dengan-sharding/ Mon, 01 Jan 0001 00:00:00 +0000 https://labs.yulrizka.com/id/scale-mongodb-dengan-sharding/ TL;DR Proses Horizontal Partitioning pada MongoDB melibatkan suatu konsep Chunk dimana data dibagi menjadi beberapa chunk sesuai dengan suatu shard key. Artikel ini membahas bagaimana melakukan sharding pada mongodb Introduksi MongoDB adalah salah satu NoSQL database yang cukup populer. MongoDB merupakan document store database, dimana data disimpan dalam format BSON atau mirip dengan JSON. Keunggulan mongoDB antara lain adalah automatic sharding. Artinya apabila kita memiliki beberapa server database, kita dapat melakukan partisi terhadap data tersebut dan mongo akan melakukan load balancing terhadap data tersebut secara automatis https://labs.yulrizka.com/id/telepon-murah-ke-indonesia-dengan-voip/ Mon, 01 Jan 0001 00:00:00 +0000 https://labs.yulrizka.com/id/telepon-murah-ke-indonesia-dengan-voip/ Disclaimer: Tulias ini berisi pengalaman penulis menggunakan VoIP dari belanda. Hasilnya mungkin berbeda dengan yang anda peroleh. Penulis tidak bertanggung jawab atas kerugian yang ditimbulkan apabila pembaca memutuskan untuk menggunakan VoIP Buat rekan-rekan yang sedang belajar atau bekerja di Belanda, terkadang kita rindu sanak saudra. Sebenarnya banyak cara untuk dapat berbincang dengan keluarga di Indonesia dengan mudah Servis gratis misalkan: Skype Google Hangouts Whatsapp calling Namun kadang-kadang berkomunikasi dengan aplikasi diatas kadang sulit.