pesterhazy

Why

Ripgrep is a fast search tool like grep. It's mostly a drop-in replacement for ag, also know as the Silver Searcher.

helm-ag is a fantastic package for Emacs that allows you to display search results in a buffer. You can also jump to locations of matches. Despite the name, helm-ag works with ripgrep (rg) as well as with ag.

How

ghoranyi

This gist will drive you through creating a Docker 1.12 Swarm cluster (with Swarm mode) on AWS infrastructure.

Prerequisites

You need a few things already prepared in order to get started. You need at least Docker 1.12 set up. I was using the stable version of Docker for mac for preparing this guide.

$ docker --version
Docker version 1.12.0, build 8eab29e

You also need Docker machine installed.

calam1

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Stream;

public class ExtensionTester {

    //================================ Supporting classes  ======================================

mhuebert

Let's say you want to use cljs.js to eval code using functions declared in your project.

Expressions that only use core functions are simple to evaluate:

(ns foo.try-eval
  (:require [cljs.js :as cljs]))

(def compiler-state (cljs/empty-state))

msgodf

Intro to Clojure

Overview

First three hours of Clojure.

Small (~3 people) group, Java experience, some Javascript and other dynamic language experience - no prior Clojure knowledge is assumed.

What can you learn?

shrayasr

Bulk Inserts via SQLAlchemy and Flask-SQLAlchemy

Problem

I ran into an issue today where I had to perform a bulk insert into a postgres DB. I was already using SQLAlchemy and Flask-SQLAlchemy to manage the connections to the db and I didn't want to have to use things like psycopg2 directly.

Solution

Note: SQLAlchemy provides an ORM. It isn't just an ORM. That is an important thing to be kept in mind. This means that you can bypass choose to not use the ORM layer when you don't want it. The idea with an ORM is to track changes to objects and when you have a case like that is when you'd use the ORM. In a bulk upload scenario, you don't need to track changes to objects. All you care is that everything be pushed into the DB.

fogus

(defrecord Server [service-map]
  component/Lifecycle
  (start [component]
    (info :msg "Starting server.")
    (let [server (bootstrap/create-server (:service-map service-map))]
      (bootstrap/start server)
      (assoc component :server server)))
  (stop [component]
    (info :msg "Stopping server.")
    (update-in component [:server] bootstrap/stop)))

Deraen

(ns foobar.components
  (:require [com.stuartsierra.component :as component]
            [compojure.api.sweet :refer :all]))

(defmethod compojure.api.meta/restructure-param :components
  [_ components acc]
  (update-in acc [:letks] into [components `(::components ~'+compojure-api-request+)]))

(defn wrap-components [handler components]
  (fn [req]

runexec

Transducers and Reducers

Notes and examples of Transducers and Reducers

Reducers

• Used on collections

• Eager evaluation only. (not lazy)

ctford

; Why Clojure?
;
; * Interactive
; * Succinct
; * Consistent
; * Java interoperability

; Try Clojure is an online "repl", where you can try out Clojure expressions.
; http://tryclj.com/