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#shamelessly copied from
#http://tech.small-improvements.com/2013/09/10/angularjs-performance-with-large-lists/
#https://gist.github.com/rkgarg/7232175
app = require '../../app.coffee'
directiveName = 'postRepeat'
app.directive directiveName, [ '$log',
  ($log) ->
    postRepeat = {}

    scope:

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def run_seq(cmd):
    """Run `cmd` and yield its output lazily"""
    p = subprocess.Popen(
        cmd, shell=True,
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
        stderr=subprocess.STDOUT)

    # make STDIN and STDOUT non-blocking
    fcntl.fcntl(p.stdin, fcntl.F_SETFL, os.O_NONBLOCK)

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class LRUCache
    constructor: (size_limit) ->
        @limit = size_limit or Infinity
        @data  = {}
        @size  = 0
        @order = []
    set: (key, val) ->
        @data[key] = val
        @size++
        @order.push key

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import akka.stm._
import scala.collection.immutable.ListMap

case class LRUCache[A, B](private val MAX_ENTRIES: Int)
{
  protected val cache = Ref(ListMap.empty[A, B]) 

  def getOrElse(key: A)(fn: => B): B = { 
    get(key).getOrElse {
      val result = fn