¿Cuáles son los requisitos previos de la refactorización?

What are the prerequisites of refactoring?

Not every code base can be refactored. Although any code can be cleaned up, only a specific code base can be truly refactored. In order to perform this process, we must have two prerequisites in place: (1) a goal and (2) quick, automated tests.

Definition. Refactoring consists of improving the internal structure of an existing program’s source code, while preserving its external behavior. The noun “refactoring” refers to one particular behavior-preserving transformation, such as “Extract Method” or “Introduce Parameter.”

With unit testing in place, refactoring is then an iterative cycle of making a small program transformation, testing it to ensure correctness, and making another small transformation. If at any point a test fails, the last small change is undone and repeated in a different way.

Two common examples are given below… Encapsulated field: We force the code to access the field with getter and setter methods. Generalize type: We create more general types to allow code sharing, replace type-checking code with the state, replace conditional with polymorphism, etc. 3. Composing Method

Kinds are hierarchical, so “kind”: “refactor” will show all refactoring Code Actions, whereas “kind”: “refactor.extract.function” will only show Extract function refactorings. Using the above keybinding, if only a single “refactor.extract.function” Code Action is available, it will be automatically applied.

Refactor: In the final and third steps, you focus on improving and enhancing your code keeping your test green. So basically this technique has two distinct parts: The first part involves writing code that adds a new function to your system and the second part is all about refactoring the code that does this function.

Visual Studio Code supports refactoring operations (refactorings) such as Extract Method and Extract Variable to improve your code base from within your editor. For example, a common refactoring used to avoid duplicating code (a maintenance headache) is the Extract Method refactoring, where you select source code…