43 lines
1.0 KiB
Plaintext
43 lines
1.0 KiB
Plaintext
The requirement for a final ``++default++`` clause is defensive programming. The clause should either take appropriate action, or contain a suitable comment as to why no action is taken. Even when the ``++switch++`` covers all current values of an ``++enum++``, a ``++default++`` case should still be used because there is no guarantee that the ``++enum++`` won't be extended.
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== Noncompliant Code Example
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----
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int foo = 42;
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switch (foo) // Noncompliant
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{
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case 0:
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Console.WriteLine("foo = 0");
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break;
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case 42:
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Console.WriteLine("foo = 42");
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break;
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}
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----
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== Compliant Solution
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----
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int foo = 42;
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switch (foo) // Compliant
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{
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case 0:
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Console.WriteLine("foo = 0");
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break;
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case 42:
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Console.WriteLine("foo = 42");
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break;
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default:
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throw new InvalidOperationException("Unexpected value foo = " + foo);
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}
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----
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include::../see.adoc[]
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ifdef::env-github,rspecator-view[]
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== Comments And Links
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(visible only on this page)
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include::../comments-and-links.adoc[]
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endif::env-github,rspecator-view[]
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