What does code smell mean?

A code smell is a surface indication that usually corresponds to a deeper problem in the system. The term was first coined by Kent Beck while helping me with my Refactoring book.

What does code smell mean in checkstyle?

Checkstyle is a well-known static code analysis tool, it can detect 4 code smells: Large Class, Long Method, Long Parameter List and Duplicated Code. Meanwhile the user of Checkstyle can operate XML file to modify parameters to detect code smell.

What is an example of a code smell?

For example: Comments, Duplicate Code, Lazy Class, Data Class, Dead Code, Speculative Generality. All the smells in this group contribute to excessive coupling between classes or show what happens if coupling is replaced by excessive delegation.

Are design patterns a code smell?

Context—Design patterns represent recommended generic solutions to various design problems, whereas code smells are symptoms of design issues that could hinder further maintenance of a software system.

What is the difference between the code smells called divergent change and shotgun surgery?

Divergent Change is when many changes are made to a single class. Shotgun Surgery refers to when a single change is made to multiple classes simultaneously.

What is the difference between a pattern and an anti-pattern?

An anti-pattern is the evil twin of a good design pattern. A good design pattern is a reusable requirement, design, or implementation that solves hard problems in a standard way, which is well designed, well documented, easy to maintain, and easy to extend.

Which of the following is an example of anti-patterns?

The term was popularized three years later by the book AntiPatterns, which extended its use beyond the field of software design to refer informally to any commonly reinvented but bad solution to a problem. Examples include analysis paralysis, cargo cult programming, death march, groupthink and vendor lock-in.

How do you fix code smells?

If you think something is missing, please check out my previous post, 5 easy wins to refactor even the ugliest code.

1. 1) Conditionals should each get their own line.
2. 3) Watch out for “Dead Stores”
3. 4) Don’t Invert Your Booleans.
4. 5) Use Templates. Don’t concatenate!

What is code smell in agile?

In computer programming, a code smell is any characteristic in the source code of a program that possibly indicates a deeper problem. Determining what is and is not a code smell is subjective, and varies by language, developer, and development methodology. It is also a term used by agile programmers.

What is a code smell Python?

Code smells are a sign of weakness or design flaw that might cause readability, maintainability, and scalability issues. Typically it originates due to bad practices and not using the correct tools.

What is divergent change code smell?

Divergent Change resembles Shotgun Surgery but is actually the opposite smell. Divergent Change is when many changes are made to a single class. Shotgun Surgery refers to when a single change is made to multiple classes simultaneously.