Class IsZeroInt

ext/src/cppformat/format.cc:193–197

IsZeroInt::visit(arg) returns true iff arg is a zero integer.

// IsZeroInt::visit(arg) returns true iff arg is a zero integer.
class IsZeroInt : public fmt::internal::ArgVisitor<IsZeroInt, bool> {
 public:
  template <typename T>
  bool visit_any_int(T value) { return value == 0; }
};

// Parses an unsigned integer advancing s to the end of the parsed input.
// This function assumes that the first character of s is a digit.