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Hakjoon Sim

Developer who lives in Seoul. Like programming and doing nothing.

About me

Android - Lambda with Retrolambda

March 03, 2017

Since Java 8 release Java programmers can take advantages of lambda expression. However it can’t be applied directly to Android development…

Java - How to override hashCode

February 06, 2017

In Effective Java(2/E), it describes hashCode method always should be overridden when equals method overridden. Then why?? Let’s have a look…

Java - Inner Class

January 10, 2017

Recently I’m focusing on eliminating findbugs’ warnings of my current project at work, and I found a lot of this kind of warning details…

Vim 8

January 05, 2017

Vim 8.0 is released!!

Strict mode in Javascript

March 24, 2016

In strict mode, javascript behaves more safely and logically, and it will gives you more warnings. To enable strict mode, you can just put…

Shell expansion

March 14, 2016

Usually I’ve been using shell expansion without any notion. However I though it would be meaningful to wrap things up. ‘Shell expansion’ can…