kachayev

import scala.actors.Actor
import scala.actors.Actor._

case object Ping
case object Pong
case object Stop

class Ping(count: Int, pong: Actor) extends Actor {
  def act() {
    var pingsLeft = count - 1

kachayev

%% 
%% Solve sleeping barber problem in most general case
%% Task description on Wikipedia:
%% http://en.wikipedia.org/wiki/Sleeping_barber_problem 
%%
%% Additions to classic variant:
%% * many barbers
%% * many clients generators with random timeouts between clients
%% * calculation for total served clients
%% * random time for each client to make barber's job

kachayev

%% 
%% Solve sleeping barber problem in most general case
%% Task description on Wikipedia:
%% http://en.wikipedia.org/wiki/Sleeping_barber_problem 
%%
%% Additions to classic variant:
%% * many barbers
%% * many clients generators with random timeouts between clients
%% * calculation for total served clients
%% * random time for each client to make barber's job

kachayev

%% 
%% Solve sleeping barber problem in most general case
%% Task description on Wikipedia:
%% http://en.wikipedia.org/wiki/Sleeping_barber_problem 
%%
%% Additions to classic variant:
%% * many barbers
%% * many clients generators with random timeouts between clients
%% * calculation for total served clients
%% * random time for each client to make barber's job

kachayev

import Data.List

uniqSubstr :: String -> Int
uniqSubstr = sum . (map pair) . pairwise . sort . tails
    where 
  	pairwise l@(_:ht) = zip l ht
	prefix pre post = length $ takeWhile (uncurry (==)) $ zip pre post 
	pair (pre, post) = length $ drop (prefix pre post) post 

kachayev

#!/bin/sh
set -e
sudo -s

apt-get update
apt-get install openjdk-6-jre openjdk-6-jdk mailtools git nginx build-essential -y
wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
echo deb http://pkg.jenkins-ci.org/debian binary/ > /etc/apt/sources.list.d/jenkins.list
apt-get update
apt-get install jenkins -y

kachayev

# python 2+
from itertools import takewhile, ifilter, izip, tee, starmap, chain

def uniq_substrings(origin):
    suffixes = chain([""], sorted(tails(origin)))
    return sum(starmap(suffix, pairwise(suffixes)))

def pairwise(iterable):
    a, b = tee(iterable)
    next(b, None)

kachayev

# python 2.7+
from itertools import dropwhile, tee, izip

def repeatfunc(f, zero):
    curr = zero
    while 1:
        yield curr
        curr = f(curr)

def pairwise(origin):

kachayev

>>> (let (a=2, b=4) (a + b))
6
>>> (let (x=20, y=40, z=1) (x*y*z))
800

kachayev

# python 2.7+
class Node(object):
    
    def __init__(self, value, left, right):
        self.value = value
        self.left = left
        self.right = right
    
    def __iter__(self):
        yield self.value