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The following is a function which, when called without arguments, creates an incrementing sequence of numbers where iterating from n to n+1 takes about 2^n seconds.

(defn slow-nums
  ([]
    (slow-nums 0 0))
  ([n sleep-for]
    (Thread/sleep (* sleep-for 1000))
    (cons n (lazy-seq (slow-nums (inc n) (Math/pow 2 n))))))

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<canvas id="display"/>
<script>
  var ctx = document.getElementById('display').getContext('2d');
  var speed = 5;
  var fps = 60;

  var circle = {
    r: 10,
    x: ctx.canvas.width / 2,
    y: ctx.canvas.height / 2,

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;; todo move this into library

(require ...)
(def rc (connect [...])

(import '[com.basho.riak.client.api.RiakCommand ListBuckets$Builder])
(.execute rc (.build (ListBuckets$Builder. "hud_link_index")))

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(def values
  [ 8  2 22 97 38 15  0 40  0 75  4  5  7 78 52 12 50 77 91  8
   49 49 99 40 17 81 18 57 60 87 17 40 98 43 69 48  4 56 62  0
   81 49 31 73 55 79 14 29 93 71 40 67 53 88 30  3 49 13 36 65
   52 70 95 23  4 60 11 42 69 24 68 56  1 32 56 71 37  2 36 91
   22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80
   24 47 32 60 99  3 45  2 44 75 33 53 78 36 84 20 35 17 12 50
   32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70
   67 26 20 68  2 62 12 20 95 63 94 39 63  8 40 91 66 49 94 21
   24 55 58  5 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72

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Persistence

(def ds (into-array [:willie :barnabas :adam])) ;; not a vector
(seq ds)
;=> (:willie :barnabas :adam)

(def ds1 (aset ds 1 :quentin))
(seq ds1)
;=> (:willie :quentin :adam)

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import time, sched

scheduler = sched.scheduler(time.time, time.sleep)

def do_stuff():
    scheduler.enter(3, 1, do_stuff, ())
    print "hi"

scheduler.enter(3, 1, do_stuff, ())
scheduler.run()

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(require '[[clojure.cache :as cache]
           [clojure.string :as string]
           [cb-statsd :as statsd]])

(def STATSD_SAMPLE_RATE 0.01)

(defn get-statsd-path
  [f]
  (as-> (str (type f)) fname ;; returns something like "class namespace$foo"
    (last (string/split fname #" ")) ;; parse out the "class "

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import cProfile

def with_profile(fn):
    def _profile_fn(*args, **kwargs):
        prof = cProfile.Profile()
        ret = prof.runcall(fn, *args, **kwargs)
        print "profile for:", fn.__name__
        prof.print_stats()
        return ret
    return _profile_fn

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#! /usr/bin/python
"""
usage: burndown [-h] [--start START] [--end END] [--retro] fname

positional arguments:
  fname

optional arguments:
  -h, --help     show this help message and exit
  --start START  start of sprint (inclusive)

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# How To Use
# In order to use .bash_chartbeat, you need to do two things
#   1. set the PATH_TO_CHARTBEAT_REPO environment variable in your ~/.bash_profile or ~/.bash_rc
#   2. source this file in your ~/.bash_profile or ~/.bash_rc
#
# By default, OSX only sources your ~/.bash_profile when you start a new
# terminal session. Add these two things to that file.
#   export PATH_TO_CHARTBEAT_REPO=$HOME/chartbeat # Or wherever your repo is
#   source $PATH_TO_CHARTBEAT_REPO/.bash_chartbeat