This package provides the vectro module, a Haskell library for working with immutable vectors that provide an efficient mutation interface (no, really!).
The vector type is represented internally as a tree with high fanout, so its depth is bounded and accesses are very cheap. Updates are also cheap, as they only need to copy those parts of a tree whose structures need modifying.
Please report bugs via the bitbucket issue tracker.
Master Mercurial repository:
hg clone http://bitbucket.org/bos/vectro
There's also a git mirror:
git clone git://github.com/bos/vectro.git
(You can create and contribute changes using either Mercurial or git.)
This library is written and maintained by Bryan O'Sullivan, bos@serpentine.com.