[Interest] reading from and writing to a file with QDataStream

[william.crocker at analog.com]

>>
>>      QDataStream out2(&file); // and module A write those datas to a file.
>>      out2 <<  bai.size();
>>      out2 <<  bai;
>

All of the following is IMHO:

I think that if you are going to read the size back as an 'int'
you should insure that an 'int' is written in the first place:

     out2 << (int)bai.size();

Sure, you can look and see that the size() of a QByteArray returns
an 'int', but that is only as of today. You should get into the habit
of controlling the types written to QDataStreams.

Bill