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Persistent storage is any data storage device that retains data after power to that device is shut off. It is also sometimes referred to as non-volatile storage. Magnetic media, such as hard disk drives and tape are common types of persistent storage, as are the various forms of Optical media such as DVD.
With a queue, it's important to maintain linear structure but still maintain the ability to modify both ends of the queue. We cannot do this through a straightforward translation of the non-persistent structure. One approach is to “buffer” items added onto the end of the queue until they are needed.
Persistent data in the field of data processing denotes information that is infrequently accessed and not likely to be modified. Static data is information, for example a record, that does not change and may be intended to be permanent. It may have previously been categorized as persistent or dynamic.
∎ An ephemeral data structure is one for. which only one version is available at a time: after an update operation, the structure as it existed before the update is lost. ∎ A persistent structure is one where. multiple versions are simultaneously accessible: after an update, both old and new versions can be used.
Are there any persistent data structures implementations in c++ similar to those in clojure?
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