Method hasCustomFormatSpecifier

include/thundersvm/util/log.h:3801–3803

@brief Returns true if custom format specifier is installed

        }
        /// @brief Returns true if custom format specifier is installed
        static inline bool hasCustomFormatSpecifier(const char* formatSpecifier) {
            return ELPP->hasCustomFormatSpecifier(formatSpecifier);
        }
        static inline void validateFileRolling(Logger* logger, Level level) {
            if (logger == nullptr) return;
            logger->m_typedConfigurations->validateFileRolling(level, ELPP->preRollOutCallback());