그냥

참고 : https://www.youtube.com/watch?v=SmKM-8Q0Egw

그 외 영상 확인

#4.0. Your First Dart Class

#4.1. Constructors

#4.2. Named Constructor Parameters

#4.3. Named Constructors

#4.4. Recap

#4.5. Cascade Notation

#4.6. Enums

#4.7. Abstract Classes

#4.8. Inheritance

#4.9. Mixins

최신 버전에서는 class 가 아닌 mixin 또는 mixin class 로 선언해주어야 한다.

#4.10. Conclusions

flutter로 가보자

#3.0. Defining a Function

#3.1. Named Parameters

#3.2. Recap

positional

named

+required

etc

#3.3. Optional Positional Parameters

#3.4. QQ Operator

#3.5. Typedef