Getting Harder

Remark I get this question a lot when I use it in daily conversation. It's subtle to explain what is different between "say" and "remark" .  When you say something as an opinion The word "Remark" is usually used to say about your opinion or say something being used that is related to the current situation. Tom remarked "There is no private data. We type something, search for something, and all of it is sent to Google." against Google News.  Do you understand what the word remark is? If you don't understand it, I'll show examples more.  Tommy always remarks "Recycling Campaign" when we are throwing away something.      

Dependency inversion Principle The dependency inversion principle (DIP) is one of the principles of SOLID. What is SOLID ? SOLID is a five design pattern to make object-oriented designs more understandable, flexible, and maintainable. To understand dependency inversion principle , we must understand what is inversion of control and dependency injection . Inversion of control What is control? And What is Inversion? We need to find the answer. So first, we are going to break down the control and inversion . What is control? Do you think about that while you are writing the code or designing the code? The control is a flow that determines in what order the code is executed . If you wrote code like the one below, the code must be executed from top to bottom . a = 10 b = 20 print (a + b) // 20 You can expect the result and directly figure out how to be executed this code. This is because you're controlling the flow of the sequence of codes. class MessengerTest { public sta...