enum and int

Hello

I have a simple enumeration:

Code:

---

enum simple {
        one = 1,
        two,
        three
};

---

Now I want to compare enum with integer.

Code:

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bool compare(simple e) {
        int someint = 2;
        return (someint == e) ? true : false;
}

---

Is this a proper way of doing this or it would be better to cast simpe enum to int (with static cast) before comparing it with integer:

Code:

---

int casted = std::static_cast<int>(e);

---

where e is simple enum datatype.

Many thanks in advance!

Why do you want to compare the enumerators with an integer in the first place?

Because I story http response/reply header this way:

Code:

---

  enum status_type
  {
    ok = 200,
    created = 201,
    accepted = 202,
    no_content = 204,
    multiple_choices = 300,
    moved_permanently = 301,
    moved_temporarily = 302,
    not_modified = 304,
    bad_request = 400,
    unauthorized = 401,
    forbidden = 403,
    not_found = 404,
    internal_server_error = 500,
    not_implemented = 501,
    bad_gateway = 502,
    service_unavailable = 503
  } status;

---

which I think its the best way of doing it. And then I have to compare it with the integers which are parsed out of the data.

Why not use a std::map from int to string? The find function would seem to be exactly what you want.

Shouldn't you be storing your responces into a status_type anyway? Its valid in C++ to store things to a status_type using istreams or however you are processing your HTTP requests.

If you create your enum 'status_type' , you probably want to compare a variable to the values you've defined. So you should compare that variable with your enum, that's what it is ment for.

Quote:

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Originally Posted by MarkZWEERS

If you create your enum 'status_type' , you probably want to compare a variable to the values you've defined. So you should compare that variable with your enum, that's what it is ment for.

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So by that definition its legal and okay to compare int with enum without casting it to enum?

It's legal, and since enums are often used simply for defining a related group of integer constants (as you are doing), all the suggestions about storing a status_type or that are just overengineering.

Quote:

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Originally Posted by CornedBee

It's legal, and since enums are often used simply for defining a related group of integer constants (as you are doing), all the suggestions about storing a status_type or that are just overengineering.

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You're probably right, but that's no fun. :( No, actually I was thinking you wanted to compare to all the enums or something, rather than one specific one.