apeckham

(defn get-free-port []
  (with-open [socket (ServerSocket. 0)]
    (.getLocalPort socket)))

xat

const pipeline = (...fns) => (val) => fns.reduce((prom, fn) => prom.then(fn), Promise.resolve(val));

const myPipe = pipeline(
  (val) => val + 1,
  (val) => val + 1
);

Promise.resolve(1)
  .then(myPipe)
  .then((result) => {

fntlnz

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

garybernhardt

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

rauchg

require-from-twitter

Since Twitter doesn't have an edit button, it's a suitable host for JavaScript modules.

How to use

Source tweet: https://twitter.com/rauchg/status/712799807073419264

const leftPad = await requireFromTwitter('712799807073419264');

jackrusher

(ns gumball-machine.core
  (:require [thi.ng.color.core :as col]
            [thi.ng.math.core :as m]
            [thi.ng.geom.core :as g]
            [thi.ng.geom.core.vector :refer [vec3]]
            [thi.ng.geom.physics.core :as ph]
            [thi.ng.geom.sphere :refer [sphere]]
            [quil.core :as q :include-macros true]))

(def particles

ElijahLynn

# These examples assume you have a container currently running.

# 1 Pipe from a file
sudo docker exec --interactive CONTAINER_NAME /bin/bash < the_beginning.sh | tee the_beginning_output.txt`

#2a Pipe by piping
echo "echo This is how we pipe to docker exec" | sudo docker exec --interactive CONTAINER_NAME /bin/bash - 

msgodf

Condition Systems in an Exceptional Language by Chris Houser

I recently watched Chris Houser's talk from Clojure/conj 2015 on condition systems in Clojure. I enjoyed the subject, so I decided to write up the talk as a way of encouraging me to really understand it, and in the hope that it might help others understand it.

The last time I heard about Common Lisp's condition system was at a talk by Didier Verna at ACCU in Bristol in 2013 (slides here). It sounded really interesting, but I didn't understand it well enough.

tl;dr

Chris Houser talks about different ways of handling errors in Clojure. Based on examples from Peter Seibel's book, Practical Common Lisp, he describes condition systems, which are also known as resumable exceptions, or restarts.

jamesmacaulay

-- paste into http://elm-lang.org/try and click "compile"
-- http://imgur.com/gallery/W6TwgZw

import Graphics.Collage exposing (..)
import Graphics.Element exposing (..)
import Text
import Color exposing (..)
import Time
import Signal

rf-

#!/usr/bin/env python

import pynvim, os, re, sys, time

# Get a list of buffers that haven't been deleted. `nvim.buffers` includes
# buffers that have had `:bdelete` called on them and aren't in the buffer
# list, so we have to filter those out.
def get_listed_buffers(nvim):
    return set(buf.number for buf in nvim.buffers \
        if nvim.eval('buflisted(%d)' % buf.number))