qtrfeast

(defn keyword->pg-enum
  "Convert a keyword value into an enum-compatible object."
  [enum-type kw]
  (doto (org.postgresql.util.PGobject.)
    (.setType enum-type)
    (.setValue (name kw))))
    
(def ->status
  "Convert a keyword status into a something_status enum object"
  (partial keyword->pg-enum "something_status"))

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

kchida

- What do Etcd, Consul, and Zookeeper do?
  - Service Registration:
    - Host, port number, and sometimes authentication credentials, protocols, versions
      numbers, and/or environment details.
  - Service Discovery:
    - Ability for client application to query the central registry to learn of service location.
  - Consistent and durable general-purpose K/V store across distributed system.
    - Some solutions support this better than others.
    - Based on Paxos or some derivative (i.e. Raft) algorithm to quickly converge to a consistent state.
    - Centralized locking can be based on this K/V store.

justinmc

/**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Anchor Smooth Scroll - Smooth scroll to the given anchor on click
*   adapted from this stackoverflow answer: http://stackoverflow.com/a/21918502/257494
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
angular.module('yourapp').directive('anchorSmoothScroll', function($location) {
    'use strict';

    return {
        restrict: 'A',
        replace: false,

allgress

(ns reagent-test.core
  (:require [reagent.core :as reagent :refer [atom]]
            [datascript :as d]
            [cljs-uuid-utils :as uuid]))

(enable-console-print!)

(defn bind
  ([conn q]
   (bind conn q (atom nil)))

karanth

SSL is an important security and privacy feature for all websites. Its details are outlined in this wikipedia [article] ("http://en.wikipedia.org/wiki/Secure_Sockets_Layer"). At Scibler, we use SSL certificates, encrypting all traffic to and fro from our servers. SSL is a public-key based asymmetric encryption scheme for symmetric key exchange. Symmetric keys are used for payload encryption. On our servers, we use embedded jetty (ring jetty adapter), with the clojure [ring] (https://github.com/ring-clojure) library to handle the http specific functionality.

This is a tutorial about installing SSL certificates on jetty webservers. SSL certificates are X.509 certificates that can be self-signed (authorized by Scibler) or can be signed by trusted third-parties. Trusted third-party certificates are the ones that a Internet user and browsers trust the most. Trusted third-party certification authorities issue certificates per domain and charge a nominal yearly fee.

####Pre-Requisites

• The Java JDK has to be

CMCDragonkai

AngularJS Directive Attribute Binding Explanation

When using directives, you often need to pass parameters to the directive. This can be done in several ways. The first 3 can be used whether scope is true or false. This is still a WIP, so validate for yourself.

1. Raw Attribute Strings

   <div my-directive="some string" another-param="another string"></div>

wfaler

// simple example of the cake pattern

// abstract DAO trait
trait Repository[A, B]{
  // saves an entity, returns an ID
  def save(entity: A): B
  // more features..
}

trait RdbmsRepository extends Repository[MyUserCaseClass, Long]{

jtan189

import java.security.SecureRandom;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.SecretKeyFactory;
import java.math.BigInteger;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;

/*
 * PBKDF2 salted password hashing.
 * Author: havoc AT defuse.ca

PanosJee

// Collecting all unique affected app version for a given data set
var jsonStats = [
  {app_versions: ['1.2','1.2.3']},
  {app_versions: null},
  {app_versions: ['1.2','1.3']}
];
var app_versions = _.uniq(_.flatten(_.compact(_.map(jsonStats, function(day){return day.app_versions }))));
// ["1.2", "1.2.3", "1.3"]

// Bye bye stupid for loops!