[no description] https://git.osdyson.ru/mirror/pkgsrc/atom?h=pkgsrc_2008Q1 2006-05-04T01:29:57Z 2006-05-04T01:29:57Z minskim minskim 2006-05-04T01:29:57Z urn:sha1:7b9d80acd12b7c48b106aa8985ef87f1232e7b92 Module Stream defines an interface for external iterators. A stream can be seen as an iterator on a sequence of objects x1, ..., xn. The state of the stream is uniquely determined by the following methods: at_beginning?, at_end?, current, and peek. State changes are done with the following operations: set_to_begin, set_to_end, forward, and backward.