When designing a class that has an explicit conversion to bool, one might wonder where it can be used as a boolean without an explicit cast.
The C standard defines specific scenarios where a value can be "contextually converted to bool." These situations fall under four main categories:
1. Statements:
2. Expressions:
3. Compile-Time Tests:
4. Algorithms and Concepts:
It's worth noting that a combination of const and non-const conversion operators can lead to confusion. Refer to the related questions below for more information:
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