A type class describing how to release a particular type of resource.

A resource is anything which needs to be released, closed, or otherwise cleaned up in some way after it is finished being used, and for which waiting for the object's garbage collection to be cleaned up would be unacceptable. For example, an instance ofjava.io.OutputStream would be considered a resource, because it is important to close the stream after it is finished being used.

An instance ofReleasable is needed in order to automatically manage a resource withUsing. An implicit instance is provided for all types extendingjava.lang.AutoCloseable.