c++ loading large amount of data at compile time

Question

I have a C++ object which needs a huge amount of data to instantiate. For example:

  class object {
      public object() { 
          double a[] = { array with 1 million double element }; 
      /* rest of code here*/};
      private:
      /* code here*/    
  }

Now the data (i.e 1 million double numbers) is in a separate text file. The question: How can I put it after "double a[]" in an efficient way and eventually compile the code? I do not want to read the data at run time from a file. I want it compiled with the object. What can be a solution? Ideally I would like the data to sit in the separate text file as it presently resides and somehow also have an assignment like double a[] =..... above.

Is this possible? Thanks in advance!

Answer 1

Something like:

class object
{
  public
  object(){ double a[] = { 
     #include "file.h"
  }; 
   /* rest of code here*/};
  private:
  /* code here*/    
}

The file has to be formatted correctly though - i.e. contain something like:

//file.h
23, 24, 40,
5, 1.1, 

In general, you can use #include directives to paste content into files. I've seen virtual methods being pasted like that, if they were common for most derived classes. I personally don't really like this technique.