How Not to Program in C++

Classes with No Class 141

38 delete[] data;

39 data = NULL;

40 }

41 data = strdup(old.data);

42 }

43 // operator =

44 v_string & operator = (

45 const v_string &old)

46 {

47 if (this == &old)

48 return (*this);

49

50 if (data != NULL)

51 {

52 delete[] data;

53 data = NULL;

54 }

55 if (old.data == NULL)

56 {

57 data = NULL;

58 return (*this);

59 }

60

61 data = strdup(old.data);

62 return (*this);

63 }

64 public:

65 // Set a value

66 void set(

67 // New string value

68 const char *const new_data

69 )

70 {

71 if (data != NULL)

72 {

73 delete [] data;

74 data = NULL;

75 }

76 data = strdup(new_data);

77

78 }

79 // Returns the value of the string

80 const char * const get(void) const

81 {

82 return (data);

83 }

84 };

142 Chapter 7

85 /************************************************

86 * operator ...