ConnectionProducer classes include ScanProducer, ReadLinesProducer, and ReadTableProducer, providing Streamer interfaces to scan, readLines, and read.table.
Consumer
(Package: Streamer) :
Class defining methods for all consumers
A virtual base class representing components that can consume data from a Producer, and yield data to the user or other Consumer instances. A Consumer typically transforms records from one form to another. Producer and Consumer instances are associated with each other through the Stream function.
A Consumer-class to select records with fixed probability, returning a yield of fixed size. Successive calls to yield result in sampling of subsequent records in the stream, until the stream is exhausted.
Producer
(Package: Streamer) :
Class defining methods for all Producers
A virtual class representing components that can read data from connections, and yield records to the user or a Consumer instance. A Producer represents a source of data, responsible for parsing a file or other data source into records to be passed to Consumer classes. Producer and Consumer instances are associated with each other through the Stream function.
A Producer-class to interpret files as raw (binary) data. Users interact with this class through the constructor RawInput and methods yield, reset, and Stream.
providing 
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