Can we store an object in a file for later retrieval?

Question

I am trying to write a code, where I need to store the intermediate results in a file for later retrieval. For example, I need to store all the values in an 3D Array in a file, with the dimensions and later retrieve the array for later use. Is there a way I could preserve the object for later use, by storing in a file. For Example....

class Obj {
};

Obj ***array;
//declare and initialize the 3d Array.
.
.
.
//do some modifications
.
.
.
.
write the object in the file
ofstream file;
file.open("some_file.txt");
file<<array;
.
.
.
end program.

reopen another program
ifstream file;
file.open("some_file.txt");
Obj *another_array;
file>>another_array;

Dont look too much details in the code snippet. its just an example..

Thanks... I think there is another think called binary serialization...

possible duplicate of [How to implement serialization in C++](http://stackoverflow.com/questions/1809670/how-to-implement-serialization-in-c) — 一二三, Mar 26 '12 at 00:59
How good is to use Binary serialization??? I use lots of pointers inside.... — howtechstuffworks, Mar 26 '12 at 01:05
Poorly phrased and an exact duplicate of older questions. I recommend searching SO for similar topics, as this has been answered before. — Mahmoud Al-Qudsi, Mar 26 '12 at 02:48

score 1 · Accepted Answer · answered Mar 26 '12 at 09:10

1

It's indeed called serialization. You're best off not reinventing the wheel. Use Boost.Serialization instead.

answered Mar 26 '12 at 09:10

MSalters

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score -1 · Answer 2 · answered Mar 26 '12 at 02:10

-1

ofstream file("some_file.bin", ios::binary);
file.write(array, sizeof(array));
file.close();

answered Mar 26 '12 at 02:10

Michael Dorst

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Can we store an object in a file for later retrieval?

2 Answers2