Question

I need to create a collection of key/value pairs like this:

map<const int, string[]> myMap; // psuedo code

What would be the best way of going about it?
Is there a way to do it where i can initialize it in one line like:

myMap.Insert(1, new string[]{ "stack", "is", "awesome" }); // pseudo code

Answer 1

Assuming you decide to stick with roughly the structure you’re currently using (with int as the key and a collection of strings as the associated value) you probably want to use std::vector<std::string> as the value, so your map is defined like:

std::map<int, std::vector<std::string> > mymap;

In this case, it’s probably easiest to use array-like notation to do your insertion:

mymap[1] = {"String", "is", "awesome"};

As it stands, this depends on using a C++11 braced initializer list. That will work with the newest compilers (e.g., gcc 4.7.0) but fail on many that are older are not yet as close to conforming with C++11 (e.g., VC++10, VC++11 beta).