# How does SonarQube resolve Cyclomatic Complexity?

## How does SonarQube resolve Cyclomatic Complexity?

Remove the Cyclomatic Complexity metric entirely which is currently throwing a warning for all our projects when the value is greater than 20. Add 5 new rules to our Quality Profile which will scan the projects and raise code smells when a specific class/method breaches the defined Cognitive Complexity threshold.

How do you reduce Cyclomatic Complexity in SonarQube?

1. Split your function up. If the function is doing multiple things, try splitting each thing out into its own function.
2. Reduce branches in your code. Often times, an if/else statement can be a conditional assignment instead.

### What are the metrics in SonarQube?

They include the number of classes, number of comment lines, i.e. lines containing either comments or commented-out code, the density of comment, number of files, number of lines, number of lines with code, number of methods and functions, or number of statements.

How does SonarQube measure maintainability?

For Maintainability the rating is based on the ratio of the size of the code base to the estimated time to fix all open Maintainability issues: <=5% of the time that has already gone into the application, the rating is A. between 6 to 10% the rating is a B. between 11 to 20% the rating is a C.

## How do you calculate cyclomatic complexity?

Apply formulas in order to compute Cyclomatic complexity. 3) Cyclomatic complexity V(G) = P +1 V (G) = 2 + 1 = 3 Where P is predicate nodes (node 1 and node 2) are predicate nodes because from these nodes only the decision of which path is to be followed is taken. Thus Cyclomatic complexity is 3 for given code.

Does cyclomatic have a complexity?

If a method has a cyclomatic complexity of 10, it means there are 10 independent paths through the method. This implies is that at least 10 test cases are needed to test all the different paths through the code. The lesser the number, the easier it is to test.

### What is cyclomatic complexity example?

Cyclomatic complexity of a code section is the quantitative measure of the number of linearly independent paths in it. For example, if source code contains no control flow statement then its cyclomatic complexity will be 1 and source code contains a single path in it. …

What is an example of cognitive complexity?

What is cognitive complexity? Cognitive complexity is how complexly or simply people think about a particular issue. So, for example, I may think “broccoli is terrible — I hate it.” That’s a pretty simple thought — one idea about broccoli. That’s more complex — it contains two distinct ideas about broccoli.

## How do I set sonar project properties?

SonarQube Properties and Parameters

1. Global analysis parameters, defined in the UI, apply to all the projects (From the top bar, go to Settings > General Settings)
2. Project analysis parameters, defined in the UI, override global parameters (At a project level, go to Configuration > Settings)

What is the formula of cyclomatic complexity?

### How is the cyclomatic complexity calculated in SonarQube?

The SonarQube documentation for the latest version clearly states how it calculates the Cyclomatic Complexity: Complexity (complexity) It is the Cyclomatic Complexity calculated based on the number of paths through the code. Whenever the control flow of a function splits, the complexity counter gets incremented by one.

How is the cyclomatic complexity of an application calculated?

Every method in your application gets a Cyclomatic Complexity count of 1, and hence if you have 20 simple methods in your application – you have already reached the threshold of 20! Also for every case in your switch statement, the Cyclomatic Complexity gets incremented by 1.