# subio
Implementing IO traits on regions of IO-compatible types.
## Use case
It is often convenient to read, write, and seek within a portion of a file as if it were itself a standalone file.
For example, a tar or zip archive, which are a number of file entries concatenated together with some metadata.
`subio` does the (trivial) bookkeeping to allow that to happen, for standard traits [std::io::Read], [std::io::Write], [std::io::Seek] etc..
## Extension
The provided types could be extended to support other IO traits like those provided by various async runtimes and io_uring.