Check Enum values by label

Question

Having something like this (example):

enum {
  label1,
  label2,
  //label3,
  label4,
  total}

Is it possible to check if any of the labels are present?

I need the total value in order to create matrices of the correct size, but need to know which of the labels are present in the list in order to perform operations specific to each item.

Not really possible in a sense you cant do Enum::label3 == undefined. Use list of strings or a smarted Enum class — dchhetri
– dchhetri, Commented Jun 4, 2013 at 19:54
It sounds like an enum might not be the best thing to use in your situation. — Steven Maitlall
– Steven Maitlall, Commented Jun 4, 2013 at 19:58

Thomas Matthews · Accepted Answer · 2013-06-04 19:57:43Z

1

Try this:

enum My_Labels
{
    label1,  
    label2,  
    // label3,
    label4,  
    total
};

static My_Labels check1 = label1;
static My_Labels check2 = label2;
static My_Labels check3 = label3;
static My_Labels check4 = label4;

You should get a compilation error for any missing elements.

Also, if you comment out label3, the value of label4 changes.

answered Jun 4, 2013 at 19:57

Thomas Matthews

58.1k18 gold badges105 silver badges165 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Check Enum values by label

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related