text: #ifndef TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
  #define TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
  
  #if defined(_MSC_VER) ||                                            \
      (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
       (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
  #pragma once
  #endif
  
  namespace YAML {
  template <typename>
  struct is_numeric {
    enum { value = false };
  };
  
  template <>
  struct is_numeric<char> {
    enum { value = true };
  };
  template <>
  struct is_numeric<unsigned char> {
    enum { value = true };
  };
  template <>
  struct is_numeric<int> {
    enum { value = true };
  };
  template <>
  struct is_numeric<unsigned int> {
    enum { value = true };
  };
  template <>
  struct is_numeric<long int> {
    enum { value = true };
  };
  template <>
  struct is_numeric<unsigned long int> {
    enum { value = true };
  };
  template <>
  struct is_numeric<short int> {
    enum { value = true };
  };
  template <>
  struct is_numeric<unsigned short int> {
    enum { value = true };
  };
  #if defined(_MSC_VER) && (_MSC_VER < 1310)
  template <>
  struct is_numeric<__int64> {
    enum { value = true };
  };
  template <>
  struct is_numeric<unsigned __int64> {
    enum { value = true };
  };
  #else
  template <>
  struct is_numeric<long long> {
    enum { value = true };
  };
  template <>
  struct is_numeric<unsigned long long> {
    enum { value = true };
  };
  #endif
  template <>
  struct is_numeric<float> {
    enum { value = true };
  };
  template <>
  struct is_numeric<double> {
    enum { value = true };
  };
  template <>
  struct is_numeric<long double> {
    enum { value = true };
  };
  
  template <bool, class T = void>
  struct enable_if_c {
    typedef T type;
  };
  
  template <class T>
  struct enable_if_c<false, T> {};
  
  template <class Cond, class T = void>
  struct enable_if : public enable_if_c<Cond::value, T> {};
  
  template <bool, class T = void>
  struct disable_if_c {
    typedef T type;
  };
  
  template <class T>
  struct disable_if_c<true, T> {};
  
  template <class Cond, class T = void>
  struct disable_if : public disable_if_c<Cond::value, T> {};
  }
  
  #endif  // TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
  