Non-Type Template Argument Is Not A Constant Expression

Non-Type Template Argument Is Not A Constant Expression - It's not a problem of constexpr actually, is a problem of template argument deduction. Such arguments must be constant. If you declare a template function in your top level, and the template parameter is not static, it means that from one call to the other the function can change.

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Non-Type Template Argument Is Not A Constant Expression. In particular, the line with the comment gives me the following error. Such arguments must be constant. If you declare a template function in your top level, and the template parameter is not static, it means that from one call to the other the function can change.

It's Not A Problem Of Constexpr Actually, Is A Problem Of Template Argument Deduction.

Such arguments must be constant. It doesn't matter if a function is declared as constexpr and you feed it constexpr arguments. Why does parameter b as struct passes while n as int fails?

The Function Is Constexpr And Is.

These are parameter to function takeb and takeint which is not template argument of a. It correctly identfies that the parameter c in opt_doesnt_work isn't constexpr. #include #include #include enum atype { undefined = 0, typea,.

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A Non Type Template Argument Must Be A Constant Expression Which The Return.

In my main function i have the following block of code. In particular, the line with the comment gives me the following error. Why doesn't standard allow to specify named variable of type const char*.

Such Arguments Must Be Constant.

If you declare a template function in your top level, and the template parameter is not static, it means that from one call to the other the function can change.