ztellman

;; let's create a simple protocol that just returns a number
user> (defprotocol NumberP (number [_]))
NumberP

;; now we'll create an implementation that always returns '1'
user> (deftype One [] NumberP (number [_] 1))
user.One

;; unsurprisingly, this type only has a single static value, which wraps the '1'
> (-> One .getDeclaredFields seq)

Chouser

(ns n01se.externs-for-cljs
  (:require [clojure.java.io :as io]
            [cljs.compiler :as comp]
            [cljs.analyzer :as ana]))

(defn read-file [file]
  (let [eof (Object.)]
    (with-open [stream (clojure.lang.LineNumberingPushbackReader. (io/reader file))]
      (vec (take-while #(not= % eof)
                       (repeatedly #(read stream false eof)))))))

natw

import random

for i in range(0, 100):
    if not i % 15:
        random.seed(1178741599)
    print [i+1, "Fizz", "Buzz", "FizzBuzz"][random.randint(0,3)]

gigamonkey

Write a program that does what it’s supposed to do
Write idiomatic code
Debug a program that you wrote
Debug a program someone else wrote
Debug the interaction between a system you wrote and one you didn’t
File a good bug report
Modify a program you didn’t write
Test a program you wrote
Test a program you didn’t write
Learn a new programming language

karmi

ElasticSearch.org Website Search: Field Notes

These are field notes gathered during installation of website search facility for the ElasticSearch website.

You may re-use it to put a similar system in place.

The following assumes:

paulp

Hello scala, my old friend
I've come to take you home again
Because a feature slowly creeping
left me plagued with doubts and weeping
and the version that was tagged in the repo
just has to go
it lacks the signs of soundness

On sleepless nights I hacked alone
applying ant and other tools of stone

swannodette

(defn debounce 
  ([c ms] (debounce (chan) c ms))
  ([c' c ms]
    (go
      (loop [start nil loc (<! c)]
        (if (nil? start)
          (do
            (>! c' loc)
            (recur (js/Date.) nil))
          (let [loc (<! c)]

delameko

TL;DR

Install Postgres 9.6, and then:

sudo pg_dropcluster 9.6 main --stop
sudo pg_upgradecluster 9.5 main
sudo pg_dropcluster 9.5 main

viktorklang

trait Enum { //DIY enum type
  import java.util.concurrent.atomic.AtomicReference //Concurrency paranoia

  type EnumVal <: Value //This is a type that needs to be found in the implementing class

  private val _values = new AtomicReference(Vector[EnumVal]()) //Stores our enum values

  //Adds an EnumVal to our storage, uses CCAS to make sure it's thread safe, returns the ordinal
  private final def addEnumVal(newVal: EnumVal): Int = { import _values.{get, compareAndSet => CAS}
    val oldVec = get

clintel

Fenced code blocks inside ordered and unordered lists

1. This is a numbered list.

2. I'm going to include a fenced code block as part of this bullet:

   Code
   More Code