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• Device pixel ratio - How to select a proper size image that looks sharp and display fast on

  What is Device Pixel Ratio?The term device pixel ratio plays the crucial role in different languages’ styling. The definition of Device pixel ratio from MDN: The devicePixelRatio of Window interface

• Coding faster with Vim + IDE | Sing's Log

  Vim X IDE My slides share Vim tutorial JetBrains IDE + vim Install ideavim Custom setting Click V icon on the right bottom corner Open and edit ~/.ideavimrc Tennis Kata demo - Dart + Android Stu

• All tags | Sing's Log

  Sing's log, a developer's blog

• CSS padding-right disappear when position fixed width 100% | Sing's Log

  When creating fixed navigation bar with padding, we got : 123position: fixed;width: 100%;padding: 15px; However you will find padding-right disappear, the reason is the width is window width + padding

• Remove duplicate documents from Mongodb by keys | Sing's Log

  BackgroundTo ensure there is no duplicate documents, we could create an unique index.However, it will throw error when there are duplicates entries in the collection: MongoDB cannot create a unique i

• New to Macbook guide for developer | Sing's Log

  Recently I start to use Macbook Pro for software development. It is really painful that so many shortcut and software are different from Windows. I hope log it down could help some MAC new comers :) R