Should we consider add example to each topics?
How to use it and best practice to use it!

I.e: for helloworld demo the example would be http://localhost:8080/demo/hello?who=ibrahim

Overview of the issue

Convert usage of Java's Optional to the Kotlin built-in null safety features.

Motivation for or Use Case

As the bulk of the Java code is now migrated to Kotlin we can start fully migrating to Kotlin using more of its built-in features. This might seem as it should have been done already but it was intentionally left out to ease the process of migration(#85) and m

몇번을 받아도 저부분에서 오류가 나네요
근데 희안한건 mac에서 git clone https://github.com/origoni/Spring-Blog
cd Spring-Blog
mvn spring-boot:run 이렇게 하면 실행이 됩니다.