lifetimes (hackage): The lifetimes package provides support for manual resource management, in a way that is more flexible than what is provided by resourcet or bracket.  Like resourcet, this package allows releasing acquired resources early. In addition, it also provides move semantics: resources can be moved to a different lifetime after they are acquired. Lifetimes are first class values, which can themselves be acquired as resources, allowing for heirarchical management as well.
Keywords: apache|library|unclassified