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Streams respond to a number of common messages. However, many of these
only work on some of the stream types, usually according to good sense:
- next
- reads and answers the next element in the stream.
This causes the stream reader to advance one element.
- peek
- reads and answers the next element in the stream.
This does not advance the stream reader.
- next:
- draws the next n number of elements from
the stream and delivers them in a Sequence of the appropriate
type.
- next:putInto:
- reads the next N elements into the given
Sequence starting from index 0.
- next:putInto:startingAt:
- reads the N elements into the
given Sequence starting from the given index.
- nextPutInto:
- reads into the given Sequence the
number of elements which will fit into it.
- nextPut:
- writes the object to the stream.
- nextPutAll:
- alias stream ; sequence
writes all the objects in the Sequence to the stream. The
; selector allows the user to cascade several sequences into
the stream as though they were concatenated.
- do:
- applies a Block to each element of the stream.
- flush
- synchronizes the total state of the stream with any
pending requests made by the user.
- isAtEnd
- answers whether or not the stream has reached some
limit.
- upToEnd
- collects all the elements of the stream up to its
limit into an ExtensibleSequence.
- contents
- answers a collection of the output of the argument
WriteStream.
Next: Basic Stream Variants
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Brian Rice
2004-08-24