Why is this an issue?

Cognitive Complexity is a measure of how hard the control flow of a routine is to understand. This can be caused by excessive use of:

• Loop structures, like for and while
• Conditionals, like if, catch and case
• Recursive sequences

Routines with high Cognitive Complexity will be difficult to maintain, as a very non-linear control flow is difficult to follow.

How to fix it

Refactor the method to use less loops, conditionals, or recursion.

Resources

• SonarSource: Cognitive Complexity white paper