Butjok

import operator
import re

def pairs(l):
    return zip(l[::2], l[1::2])

def vm(ops, env={}):
    class closure:
        def __init__(self, pc, env): self.pc, self.env = pc, env
    def popn(n):

jonasrosland

Use Docker Swarm with a data persistence layer

Create a Docker Swarm discovery token

curl -X POST https://discovery.hub.docker.com/v1/clusters
YOURSWARMTOKEN

Export the correct environment variables

flaccid

    $ export RANCHER_HOST=foo.bar.suf
    $ export RANCHER_PORT=8080
    $ export RANCHER_PROJECT_ID=1a8
    $ export RANCHER_STACK_NAME=killerapp
    $ ./cattle-deploy.py

output:

snapshot epoch is1437634695
created temp file /var/folders/sx/ht6gznq979v5r725sqt7_p617p38sz/T/tmpprzZsd

ohanhi

Learning FP the hard way: Experiences on the Elm language

by Ossi Hanhinen, @ohanhi

with the support of Futurice 💚.

Licensed under CC BY 4.0.

Editorial note

kwmiebach

Usage

(Create a symlink pytest for py.test)

pytest [options] [file_or_dir] [file_or_dir] ...

Help:

lewisd32

echo "Flipping tables! (╯°□°）╯︵ ┻━┻"

num_rules=3

real=3    # exposed to the ELB as port 443
test=4    # used to install test certs for domain verification
health=5  # used by the ELB healthcheck

blue_prefix=855
green_prefix=866

rodneyrehm

some tools for diagrams in software documentation

Diagrams For Documentation

Obvious Choices

• Graphviz
• Pandoc

ASCII

amatellanes

py.test test_sample.py --collect-only  # collects information test suite

py.test test_sample.py -v  # outputs verbose messages

py.test -q test_sample.py  # omit filename output

python -m pytest -q test_sample.py  # calling pytest through python

py.test --markers  # show available markers

john2x

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

jafingerhut

(ns inputstream.core
  (:require [clojure.java.io :as io]))


(defn read-is [^java.io.InputStream is]
  (let [bufsize 8192
        buf (byte-array bufsize)]
    (loop [total-len 0]
      (let [n (.read is buf)]
        (cond