λondon HUG

Next Meeting 20th September

I’m pleased to announce that the next London HUG meeting will be on Thursday 20th September at City University, starting 6:30PM. This time we have two great talks for you.

Firstly, Dr Ross Paterson of City Uni will talk about finger trees. To quote from his abstract:

“We introduce 2-3 finger trees, a functional representation of persistent sequences supporting access to the ends in amortized constant time, and concatenation and splitting in time logarithmic in the size of the smaller piece. Representations achieving these bounds have appeared previously, but 2-3 finger trees are much simpler, as are the operations on them. Further, by defining the split operation in a general form, we obtain a general purpose data structure that can serve as a sequence, priority queue, search tree, priority search queue and more.”

Afterwards Matthew Sackman and Tristan Allwood, both PhD students at Imperial College, will talk about game design in Haskell. They will hopefully be giving live demonstrations of some of the games they have developed, depending on the availability of hardware. Abstract to follow.