Function isalpha

simcore/framework/src/cli/cli.hpp:318–320

Verify that str consists of letters only

/// Verify that str consists of letters only
inline bool isalpha(const std::string &str) {
  return std::all_of(str.begin(), str.end(), [](char c) { return std::isalpha(c, std::locale()); });
}

/// Return a lower case version of a string
inline std::string to_lower(std::string str) {