rubocop-hq/rubocop

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lib/rubocop/cop/metrics/perceived_complexity.rb

Summary

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1 hr
Test Coverage
A
100%

Method complexity_score_for has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.
Open

        def complexity_score_for(node)
          case node.type
          when :case
            # If cond is nil, that means each when has an expression that
            # evaluates to true or false. It's just an alternative to
Severity: Minor
Found in lib/rubocop/cop/metrics/perceived_complexity.rb - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

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