pub fn new_partial(fd: RawFd, offset: usize, len: usize) -> io::Result<Self> {
        let inner = MmapedFileInner::new_partial_readonly(fd, len, offset as _, true)?;

        Ok(Self { inner })
    }
/// mmap part of file into memory.
mmap part of file into memory.
mmap part of file into memory .
pub fn new_partial(fd: RawFd, offset: usize, len: usize) -> io::Result<Self> {
        let inner = MmapedFileInner::new_partial_readonly(fd, len, offset as _, true)?;
        Ok(Self { inner })
    }
pub fn new_partial ( fd : RawFd , offset : usize , len : usize ) -> io :: Result < Self > { let inner = MmapedFileInner :: new_partial_readonly ( fd , len , offset as _ , true ) ? ; Ok ( Self { inner } ) }
mmap part of file into memory.
mmap part of file into memory .
fd
RawFd
offset
usize
len
usize
fd
RawFd
offset
usize
len
usize