This function is available only on CharStorage.

This method resizes the storage to the length of the provided string str, and copy the contents of str into the storage. The NULL terminating character is not copied, but str might contain NULL characters. The method returns the Storage. 

> x = torch.CharStorage():string("blah blah")
> print(x)
  98
 108
  97
 104
  32
  98
 108
  97
 104
[torch.CharStorage of size 9]