This library provides generic serialisation capabilities to Futhark programmers [1,2]. The library is built around the notion of picklers, which are values that can be constructed from a number of combinators. Picklers are typed with an index type and given a pickler, it is possible to serialise and deserialise (to and from byte streams) values of the index type.

$ futhark pkg add github.com/diku-dk/pickle
$ futhark pkg sync

$ futhark repl
[0]> import "lib/github.com/diku-dk/pickle/pickle"
[1]> pickle.(pickle (array (pair i32 i32)) [(1,2),(3,4)])
[0u8, 0u8, 0u8, 2u8, 0u8, 0u8, 0u8, 8u8, 0u8, 0u8, 0u8, 1u8, 0u8, 0u8, 0u8, 2u8,
 0u8, 0u8, 0u8, 3u8, 0u8, 0u8, 0u8, 4u8]
[2]> pickle.(unpickle (array (pair i32 i32)) [0u8, 0u8, 0u8, 2u8, 0u8, 0u8, 0u8, 8u8, 0u8, 0u8, 0u8, 1u8, 0u8, 0u8, 0u8, 2u8, 0u8, 0u8, 0u8, 3u8, 0u8, 0u8, 0u8, 4u8])
[(1i32, 2i32), (3i32, 4i32)]
[3]>

[1] Martin Elsman. Type-Specialized Serialization with Sharing. In Sixth Symposium on Trends in Functional Programming (TFP’05). Tallinn, Estonia. September 2005.

[2] Andrew Kennedy. Pickler Combinators (Functional Pearl). In Journal of Functional Programming. Volume 14, Issue 6, pp. 727-739. November 2004.