Towards Reasoning about State Transformer Monads in Agda
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Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Computer science – algorithms, languages and logic (MPALG), MSc
Publicerad
2009
Författare
Bui, Viet Ha
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Wouter Swierstra showed in his PhD thesis how to implement stateful computations in the dependently typed functional programming language Agda. In particular he defined a notion of state which is parameterized by a list of types indicating what kind of data are to be stored in the respective locations. He also showed how to define monadic state transformation over this notion of state. In this thesis we extend Swierstra’s work with two new contributions. The first is to implement a stateful version of Dijkstra’s algorithm for the Dutch National Flag in Agda. We prove some properties of a function which swaps the contents of two locations, an important step towards showing full correctness of the algorithm in Agda. The second contribution is to formally prove (in Agda) some properties about monads suggested by Plotkin and Power.
Beskrivning
Ämne/nyckelord
Datalogi , Programvaruteknik , Computer science , Software Engineering