ireadBin: Create an iterator to read binary data from a connection
In itertools: Iterator Tools

Create an iterator to read binary data from a connection.

1 2	ireadBin(con, what='raw', n=1L, size=NA_integer_, signed=TRUE, endian=.Platform$endian, ipos=NULL)

`con`	A connection object or a character string naming a file or a raw vector.
`what`	Either an object whose mode will give the mode of the vector to be read, or a character vector of length one describing the mode: one of “numeric”, “double”, “integer”, “int”, “logical”, “complex”, “character”, “raw”. Unlike `readBin`, the default value is “raw”.
`n`	integer. The (maximal) number of records to be read each time the iterator is called.
`size`	integer. The number of bytes per element in the byte stream. The default, ‘NA_integer_’, uses the natural size.
`signed`	logical. Only used for integers of sizes 1 and 2, when it determines if the quantity on file should be regarded as a signed or unsigned integer.
`endian`	The endian-ness ('“big”' or '“little”') of the target system for the file. Using '“swap”' will force swapping endian-ness.
`ipos`	iterable. If not `NULL`, values from this iterable will be used to do a seek on the file before calling readBin.

zz <- file("testbin", "wb")
writeBin(1:100, zz)
close(zz)

it <- ihasNext(ireadBin("testbin", integer(), 10))
while (hasNext(it)) {
  print(nextElem(it))
}
unlink("testbin")