constexpr variable cannot have non literal type string

Mar 13, 2013 · If the target variables were declared constexpr you'd get a correctly and the string may be evaluated at runtime This recursive approach works for non modulus types If a static data member is of const literal type, its declaration in the for the same type cannot have differing names or be in different 

“Integer” only (almost) through non type template parameters 4 template •if a constexpr member function (in a literal type) is const, you need to • can have local variables of “literal” type •loops, recursion static assert(num < 1000, "can not handle large numbers"); std string const expected=R"( 1 2 3 4 5 6 7 

Feb 26, 2006 · the proposal for Literals for user defined types [Str03], Generalized initializer situations where values need to be known at compile time The main thrust of this A constant expression may be called with non constant expressions, in that case there private static constexpr int val; constexpr variable };

Jul 4, 2014 · with text Unlike std string, an instantiation of std string literal is a literal type and so can be be the type of a parameter, return value or local variable of a constexpr function What about making the code units themselves a non type template And we have an output template that needs a char pack

Inline functions have favorable behavior for interfaces which cannot be exposed as objects Whereas a global constant of literal class type (defined in a header with const but not constexpr static literal array< foo, 300 > No auto allowed Finally, one TU must provide a non initialized definition of the member table,

Jan 30, 2019 · A decimal literal has the smallest type of int, long, or long long (ie, the first type in variableName can refer to both constant or non constant variables Variables declared as constexpr are implicitly const and must be Do note the C style string cannot use relational operators to compare, as what 

Non Confidential ARM Compiler v41 229 bit field cannot contain all values of the enumerated type 230 nonstandard type 1066 expected a string literal 1070 incorrect use 3646 a constexpr variable declaration must be a definition

Non Confidential ARM Compiler v41 229 bit field cannot contain all values of the enumerated type 1429 string literals with different character kinds cannot be concatenated 3654 a constexpr variable declaration must be a definition

Jun 6, 2018 · recursively, have a non user provided operator returning a type that is implicitly introduction of the constexpr keyword, leaving us in a situation where we have a great but we cannot declare template parameters to accept them numeric literal operator template and string literal operator template