I need some help here.

[Damian]

> 
> class MyArray(T) {
> 	private T[] _data;
> 	
> 	T opIndexAssign(uint index, T value) {
> 		notifyThatDataHasChanged();
> 		return _data[index] = value;
> 	}
> 
> 	T opIndex(uint index) {
> 		return _data[index];
> 	}
> 	...
> }
> 
> This means that you can use your class's opIndex for something else. 
> Alternatively, you could use this interface to return an immutable 
> version of _data, just by not supporting opIndexAssign.
> 

I would have to use 
MyArray!(MyArray!(char)) _data;
for _data to be really immutable.
Anyway, I can't do this that way, since my class "cl" couldnt modify
_data either.

I think I will do something like this:

    private:
        char[][] _data;
        int _maxDataLength;
    public:
	/** _DO NOT_ modify data this way, use "void data(char[][] d)" */
        char[][] data(){
            _return data;
        }
        void data(char[][] d){
            _maxDataLength = calculateMaxDataLength(d);
            _data = d;
        }