cpursley

PostgreSQL is Enough

• Simplify: move code into database functions
• Just Use Postgres for Everything
• PostgreSQL is the worlds’ best database
• Postgres is eating the database world
• Hacker News discussion

Background and Cron Jobs

jclaggett

(ns ezducerdemo)

;;
;; 1st take
;;

(defn ezducer [constructor]
    (fn [reducer]
      (let [steps (fn [a vs] 
                    ;; Use loop/recur instead of reduce to avoid reduce's

quephird

SQL Tricks

Contents

• Purpose
• Nota bene
• Example schema
• Selecting records
  • How do I get a list of items and the sum of another column in a table?
  • How do I concatenate a list of string values each relavant to a row?
• How do I get a list of items and filter the result set on some aggregate?

ghadishayban

(import '[java.lang.reflect Method Modifier])

(set! *warn-on-reflection* true)

(defn- samsig
  "Given a SAM interface, returns the j.l.reflect.Method of the abstract method"
  [sym]
  (let [kls (resolve sym)]
    (if (and (class? kls) (.isInterface ^Class kls))
      (let [mid (fn [^Method m] [(.getName m) (vec (.getParameterTypes m))])

ghadishayban

#!/bin/bash

# author Ghadi Shayban <gshayban@gmail.com>
set -e

if [ -z ${1+x} ]
then
  echo provide an asm git sha / ref
  exit 1
fi

devn

defmodule Do do
  def dont think, about, it, but, please do
    [think, about, it, please]
  end
end

Do.dont :worry, :about, :grouping, :any, :arguments
=> [:worry, :about, :grouping, :arguments]

pjstadig

(ns typehint.core)

;; A little type hint hint...

(set! *warn-on-reflection* true)

;; There are two ways to type hint the return value of a function, but one is
;; (technically) wrong:

(defn ^String as-string0

noprompt

(ns strum.core
  (:refer-clojure :exclude [defn])
  (:require
   [clojure.spec :as spec]
   [clojure.spec.test :as spec.test]))

;; ---------------------------------------------------------------------
;; Prelude

;; HACK: Currently, as of Clojure 1.9.0-alpha14, there is a bug with

lrascao

dash_id=xxxx
api_key=xxx
app_key=xxx

# 1. export
curl -X GET "https://app.datadoghq.com/api/v1/dash/${dash_id}?api_key=${api_key}&application_key=${app_key}" > dash.json

# 2. edit dash.json
move "graphs", "title", "description" up one level in the json hierarchy, from being beneath "dash" to being at the same level

alandipert

(defelem blink
  [{:keys [interval :as attr] :or {interval 1000}} kids]
  (with-let [container (span (dissoc attr :interval) kids)]
    (with-init!
      (with-interval interval
        (.toggle (js/jQuery container))))))