Save/load data to a file

[nobody]

I would like to be able to save and load a lot of data to/from a file. (in 
D1)
For example a struct like this:

struct Fruit
{
    int banana;
    double[][] orange;
    bool[] apple;
}

Practically all the examples that I've come across only deal with saving and 
loading text, so I'm having a hard time dealing with saving/loading 
arrays/floats/bools/etc.

What would be a good way to do this?