40 lines
936 B
Plaintext
40 lines
936 B
Plaintext
``switch`` can contain a ``default`` clause for various reasons: to handle unexpected values, to show that all the cases were properly considered.
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For readability purpose, to help a developer to quickly find the default behavior of a ``switch`` statement, it is recommended to put the ``default`` clause at the beginning or the end of the ``switch`` statement. This rule raises an issue if the ``default`` clause is not the first or the last one of the ``switch``'s cases.
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== Noncompliant Code Example
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----
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switch tag {
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case 0, 1, 2, 3:
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foo()
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default: // Noncompliant; default case should be the first or last one
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qix()
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case 4, 5, 6, 7:
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bar()
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}
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----
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== Compliant Solution
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----
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switch tag {
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default:
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qix() // Compliant; default is the first one
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case 0, 1, 2, 3:
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foo()
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case 4, 5, 6, 7:
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bar()
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}
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----
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----
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switch tag {
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case 0, 1, 2, 3:
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foo()
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case 4, 5, 6, 7:
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bar()
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default:
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qix() // Compliant; default is the last one
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}
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----
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