kapilreddy

Hello! This document is for young software engineers. The goal of this document is to provide a foundation (and not overwhelm you).

Developer environment

A good dev environment is a great foundation to build and learn bigger things. Before learning any tech you should invest some time learning these basics. Treat this as if you are setting up your study table.

Shell

The shell is one of the most basic (and very powerful) ways to interact with your computer. This is where all the interesting things will start and end when you are writing software.

Resources:

kapilreddy

// ==UserScript==

(function () {
    'use strict';

    let nowPlayingClassName = 'now-playing-tracklist-row'
    let buffer = [];
    let bindings = [
        {binding: ["control", "f"], action: moveForward},
        {binding: ["control", "b"], action: moveForward}

kapilreddy

Painters

• Vincent van Gogh
• Vermeer
• Marcel Duchamp

Filmmakers

• Alfred Hitchcock
• Robert Bresson
• Yasujirō Ozu
• Abbas Kiarostami

kapilreddy

(defn info
  [{:keys [ns symbol class member] :as msg}]
  (let [[ns symbol class member] (map u/as-sym [ns symbol class member])]
    (if-let [cljs-env (cljs/grab-cljs-env msg)]
      (info-cljs cljs-env symbol ns)
      (let [var-info (cond (and ns symbol) (clj-info/info ns symbol)
                           (and class member) (clj-info/info-java class member)
                           :else (throw (Exception.
                                         "Either \"symbol\", or (\"class\", \"member\") must be supplied")))
            ;; we have to use the resolved (real) namespace and name here

kapilreddy

ABC
  No previous messages
    Open chat and Add message -> New Issue
  New Issue
    Agent sends message -> Issue in progress
    User sends message -> New Issue
    User deletes thread -> No previous messages
  Issue in progress
    Agent sends message -> Issue in progress
    User sends message -> Issue in progress

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Kaioken
  Initialize Kaioken
    Message received  -> Consume messages
  Consume messages
    Message received -> Consume messages
    Enough messages received -> Bulk start
  Bulk start
    Bulk success -> Consume messages
    Retriable error -> Bulk start
    Non-recoverable error -> Exit

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Kaioken
  Initialize Kaioken
    Message received  -> Consume messages
  Consume messages
    Message received -> Consume messages
    Enough messages received -> Bulk start
    
  Bulk start
    Data store - Success response -> Bulk success
    Data store - Retriable error -> Bulk start

kapilreddy

;; project.clj
;; [clj-time "0.6.0"]
;; [org.clojure/data.json "0.2.4"]
;; [clj-kafka "0.2.8-0.8.1.1"]

;; Utility to find offsets in a given Kafka topic for a given
;; cursor/point in time. The code assumes that each message has a
;; monotonically increasing number (ex. unix timestamp) associated with
;; it.

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(ns core-async-kafka.core
  (:require [clojure.core.async :refer [chan buffer go >!! <!! <! close! sliding-buffer]]))


(defn process-message
  [msg status-chan]
  (>!! status-chan :in-progress)
  (Thread/sleep (rand-int 10000))
  (println (format "Consumed %s message" msg))
  (>!! status-chan :sucess))

kapilreddy

(defn divide-coll
  "Divide collection of block heights into regions where water will be blocked.
   ex.
   [1 2 0 1 3 2 1 0 3] -> [[3 2 1 0 3] [2 0 1 3]]"
  [c]
  (let [regions (reduce (fn [coll i]
                          (cond
                           (seq coll) (let [[x & xs] coll
                                            from (first x)
                                            new-x (conj (vec x) i)]