spacebat

;; An example of append method combination to form a projection of an object's slots

(defclass odour-mixin ()
  ((odour :initarg :odour :initform nil :reader odour)))

(defclass colour-mixin ()
  ((colour :initarg :colour :initform nil :reader colour)))

(defclass sound-mixin ()
  ((sound :initarg :sound :initform nil :reader sound)))

nikodemus

;;;; In response to:
;;;;
;;;;    http://www.reddit.com/r/lisp/comments/3710zq/directed_procrastination_backtracking_with_the/
;;;;    http://directed-procrastination.blogspot.se/2011/05/backtracking-with-common-lisp-condition.html
;;;;
;;;; Demonstrating why one should not use conditions for this kind of stuff,
;;;; instead using the dynamic binding and unwinding facilities on which the
;;;; condition system is built. The author's backtracking system doesn't compare
;;;; badly to Screamer because his is simple: it compares badly because using
;;;; conditions is a bad match for the task.

debasishg

General Background and Overview

1. Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
2. Models and Issues in Data Stream Systems
3. Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
4. Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
5. [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep=rep1&t

owainlewis

import Control.Monad
import Data.Char
import qualified Data.List.Key as K
import System.Random
 
data Treap k a = Nil | Node Int k a (Treap k a) (Treap k a)
 
priority :: Treap k a -> Int
priority Nil = -1
priority (Node p _ _ _ _) = p

simonsarris

Where to Live (Du Fu)

West of the Flower Washing Stream,
       not far downstream from the bridge,
the master has chosen a quiet spot
       here in the woods by the river.

Living apart from the city crowds,
       the world loosens its grip;
murmuring of this clear water dissolves

sshirokov

(defpackage :fsm 
  (:use :cl)
  (:export :standard-state-machine
           :standard-state-machine-event
           :state
           :defstate
           :deffsm))
(in-package :fsm)

;; Basic copy-pasta protection