Question

I use code like this:

const vector<filterStat> someArray={
        {"Ana",1},
        {"Bob",2},
        {"Charlie",5},
};
static const int knElements=filterStats.size();

Ignore the kn prefix, it is my way of saying constant, size.
I found it useful because I don;t have to change or calculate knElements when I change the initialization of the vector. But the problem is that using a const vector bothers me because vector is resizable array so it feels wrong. BTW if you are wondering why I need it-long story, it’s kind of a map, but I dont do any searching or inserting, just “for each” so array is the best choice.

EDIT:
I changed my cod to this and it compiles:

const   filterStat filterStats[]={
//...
};

static const int knFilterStats=sizeof(filterStats)/sizeof(filterStats[0]);
static_assert(sizeof(filterStats),"Can't run statistics-no filterStats exists");

I had no idea that you can do [] in c++. Sorry for stupid question, I hope it helps somebody.

Answer 1

A const vector is a perfectly good thing to have – your code is the right way to do things.