What are some common errors people make when using SFINAE?
Common errors in SFINAE include misunderstanding template argument deduction, incorrect use of decltype
, and failing to provide valid overloads.
Can you explain how misunderstanding template argument deduction can lead to errors?
Sure! Misunderstanding template argument deduction can cause the compiler to select the wrong overload, leading to unexpected behavior or compilation errors.
What about the use of decltype
? How can that be problematic?
Using decltype
incorrectly can result in type mismatches, especially if the expression inside it is not valid in the context of SFINAE.
Are there any best practices to avoid these errors?
Yes! To avoid these errors, ensure you have clear overloads, use static assertions for type checks, and thoroughly test your templates.
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