Thank you @RespiteSage, it would indeed be a solution for this particular problem. However, there are instances where I would need to store the full sequence (which may be larger that 2GB). Would you know any way to do this, other than subclassing String to increase its size to an i64?
@orangeSi The fasta in your example is not valid. The ‘>’ character has to be the first one on the line and can’t appear anywhere else. Moreover, reading a large fasta line by line would be very slow compared to reading in chunks (I think, I have not tested it).