Const members of type string in a class definition

[usenet]

Kindly pardon my ignorance, but what is the way to declare a constant
attribute of type string within a class?

Thanks,
Gus

 

[red floyd]

Kindly pardon my ignorance, but what is the way to declare a constant
attribute of type string within a class?

Thanks,
Gus

#include <string>
class C {
const std::string a_const_string;
};

std::string C::a_const_string("Some string value here");

 

[red floyd]

#include <string>
class C {
const std::string a_const_string;
};

std::string C::a_const_string("Some string value here");

Damn. That should be static const in the declaration , and const in the
definition.

class C {
static std::string const a_const_string;
};

std::string const C::a_const_string("A const string);

.....

Alternatively, if the const is per-object, rather than across the entire
class:

class C {
const std::string a_const_string;
public:
C(const std::string& s) : a_const_string(s) { }
};

 

[Old Wolf]

Kindly pardon my ignorance, but what is the way to declare a constant
attribute of type string within a class?

class C
{
std::string const s;

public:
C(): s("whee") { }
};

As floyd noted, if the string is going to be the same for all objects
of this type, then you could make the compiler's job easier by
making the string static.