Use the "constructor" function that implicitly creates a function for adding to the runtime.

The "constructor" function is a template function that takes a signature for what you want your constructor to do.

struct MyStruct
{
  //Default constructor
  MyStruct();
 
  //Copy constructor
  MyStruct(const MyStruct &);
 
  //int constructor
  MyStruct(int i);
}
 
ChaiScript chai;
 
//Add the default constructor
chai.add(constructor<MyStruct ()>(), "MyStruct");
 
//Add the copy constructor
chai.add(constructor<MyStruct (const MyStruct &)>(), "MyStruct");
 
//Add the int constructor
chai.add(constructor<MyStruct (int)>(), "MyStruct");

ChaiScript's runtime dispatch capatilibties makes it perfectly legitimate and reasonable to add each constructor with the same name.

Also, notice that the name of the constructor is arbitrary, ChaiScript does not care what it is called, it becomes a regular function to the ChaiScript interpreter.