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(02 Sep 2010,
Date: 2006-11-23 Time: 11:45 Room: BBL room 471 ----+++ Speaker: [[http://www.cs.uu.nl/~doaitse][Doaitse Swierstra]] ----+++ Title: Rewriting Haskell Strings [[#OrigAuth][(*)]] ----+++ Abstract The Haskell String type is notoriously inefficient. We introduce a new data type, <nop>ByteString, based on lazy lists of byte arrays, combining the speed benefits of strict arrays with lazy evaluation. Equational transformations based on term rewriting are used to deforest intermediate <nop>ByteStrings automatically. We describe novel fusion combinators with improved expressivity and performance over previous functional array fusion strategies. A library for <nop>ByteStrings is implemented, providing a purely functional interface, and approaches the speed of low-level mutable arrays in C. #OrigAuth (*) Authors: Duncan Coutts (Programming Tools Group, Oxford University Computing Laboratory) Don Stewart and Roman Leshchinskiy (Computer Science & Engineering, University of New South Wales) Accepted for PADL 2007.
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