View Source Credo.Check.Refactor.CyclomaticComplexity (Credo v1.6.7)
This check has a base priority of 0 and works with any version of Elixir.
Explanation
Cyclomatic complexity (CC) is a software complexity metric closely correlated with coding errors.
If a function feels like it's gotten too complex, it more often than not also has a high CC value. So, if anything, this is useful to convince team members and bosses of a need to refactor parts of the code based on "objective" metrics.
Check-Specific Parameters
Use the following parameters to configure this check:
:max_complexity
The maximum cyclomatic complexity a function should have.
This parameter defaults to 9.
General Parameters
Like with all checks, general params can be applied.
Parameters can be configured via the .credo.exs config file.
Link to this section Summary
Functions
Returns the Cyclomatic Complexity score for the block inside the given AST, which is expected to represent a function or macro definition.
Link to this section Functions
Returns the Cyclomatic Complexity score for the block inside the given AST, which is expected to represent a function or macro definition.
iex> {:def, [line: 1],
...> [
...> {:first_fun, [line: 1], nil},
...> [do: {:=, [line: 2], [{:x, [line: 2], nil}, 1]}]
...> ]
...> } |> Credo.Check.Refactor.CyclomaticComplexity.complexity_for
1.0