Become a member
Sign in
Bumpei Shimada
Bumpei Shimada

Bumpei Shimada

👨‍💻React/Java Developer. https://www.linkedin.com/in/bumpei-shimada/

253 Following
163 Followers
·
  • Profile
  • Claps

Featured

Bumpei Shimada
Bumpei Shimada
Aug 19 · 1 min read

React Hooks: How to implement "exact" componentDidUpdate alternative

TL;DR
— If you don’t want useEffect to be executed when a class is loaded, use a boolean value to detect it
— To detect a change of an element, toggle boolean value instead of setting true/false value

2

Latest

Bumpei Shimada
Bumpei Shimada
Nov 28, 2018 · 3 min read

Java Initialization Cheat Sheet😏

Initialization order

Java Cheat Sheet😏

When the class loading executed

Default values of static members (or the one assigned outside methods)

Bumpei Shimada
Bumpei Shimada
Nov 28, 2018 · 3 min read

The way to introduce testing rules to your team smoothly

Bumpei Shimada
Bumpei Shimada
Nov 21, 2018 · 3 min read

How to write a unit test in TDD development team

Bumpei Shimada
Bumpei Shimada
Nov 15, 2018 · 3 min read

How to implement complexed validation classes neatly in Spring