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Why do I get a cyclometric complexity of 2 for a switch block?

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MathWorks Support Team
MathWorks Support Team 2020年8月7日
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Answered: MathWorks Support Team 2020年8月7日
I am running the "Cyclomatic complexity metric" check for a model which contains a switch block. Why do I get a Cyclometric complexity of 2?
My switch block has 1 decision point and 2 outcomes so the cyclometric complexity should be 1, but I am getting a complexity of 2. Please provide the reasoning behind this.

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Accepted Answer

MathWorks Support Team
MathWorks Support Team 2020年8月7日
As per the formula in the following documentation the cyclometric complexity for the block is computed individually as 1:
//www.tatmou.com/help/slcheck/ref/model-metric-checks.html#buuybox-1
The formula is applied to every block in the model, so switch block gets a cyclometric complexity of 1 and default path in the model without the switch block adds another 1 for a total complexity of 2.

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