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33 lines
886 B
Markdown
33 lines
886 B
Markdown
## Safe switch
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A Better Enum can be used directly in a `switch` statement:
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#include <iostream>
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<em>#include <enum.h></em>
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<em>BETTER_ENUM(Channel, int, Red, Green, Blue)</em>
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int main()
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{
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Channel channel = Channel::Green;
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int n;
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<em>switch </em>(<em>channel</em>) {
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<em>case Channel::Red</em>: n = 13; break;
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<em>case Channel::Green</em>: n = 37; break;
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<em>case Channel::Blue</em>: n = 42; break;
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}
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If you miss a case or add a redundant one, your compiler should be able to give
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you a warning — try it!
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---
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std::cout << n << std::endl;
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return 0;
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}
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%% description = Better Enums can be used directly in switch statements like
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normal enums, making it possible for the compiler to check that all cases are
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listed, increasing the safety of your code.
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