![]() With preprocess you might see where a define of yours messed up something in AcountsDefines. Generally it will complain about undefined classes if they were never compiled successfully earlier in the source file. double operator "" _Z ( long double ) // OK. pch file Something is causing the compiler to compile something incorrect at that point. #include void operator ""_km ( long double ) // OK, will be called for 1.0_km void operator "" _km ( long double ) // same as above, deprecated std:: string operator ""_i18n ( const char *, std:: size_t ) // OK template double operator ""_π ( ) // OK float operator ""_e ( const char * ) // OK // error: suffix must begin with underscore float operator ""Z ( const char * ) // error: all names that begin with underscore followed by uppercase // letter are reserved (NOTE: a space between "" and _). If the lookup does not find a declaration, the program is ill-formed. ![]() When the compiler encounters a user-defined literal with ud-suffix X, it performs unqualified name lookup, looking for a function with the name operator ""X. If a token matches a user-defined literal syntax and a regular literal syntax, it is assumed to be a regular literal (that is, it's impossible to overload LL in 123LL). In the integer and floating-point digit sequences, optional separators ' are allowed between any two digits. Same as in string literal, including raw string literalsĪn identifier, introduced by a literal operator or a literal operator template declaration (see below) Same as in floating literal, the letter e or the letter E followed by optional sign, followed by digit-sequence Same as in floating literal, either a digit-sequence followed by a dot ( 123.) or an optional digit-sequence followed by a dot and another digit-sequence ( 1.0 or. ![]() Same as in floating literal, a sequence of decimal digits Same as in integer literal, 0b or 0B followed by one or more binary digits Same as in integer literal, 0x or 0X followed by one or more hexadecimal digits Same as in integer literal, a zero followed by zero or more octal digits Same as in integer literal, a non-zero decimal digit followed by zero or more decimal digits 8) user-defined string literal, such as "abd"_L or u "xyz"_M decimal-literal ![]()
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