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P5-set-intspan
Jul 20, 2023
Manages sets of integers
SetIntSpan manages sets of integers. It is optimized for sets that have long runs of consecutive integers. These arise, for example, in .newsrc files, which maintain lists of articles
alt.foo 1-21,28,31
alt.bar 1-14192,14194,14196-14221
Sets are stored internally in a run-length coded form. This provides for both compact storage and efficient computation. In particular, set operations can be performed directly on the encoded representation.
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