tkachenko1503

This is my lightning talk submission to ReactiveConf 2018 https://reactiveconf.com/

In this talk, I want to share my experience gained during the development of frontend applications in several programming languages.

I think it's not a secret for anybody that developing large JavaScript applications is not so easy as it seems at first glance. We all want something simpler and more reliable. Therefore, many developers and even entire companies switch to different, compiled in JavaScript, programming languages. The bulk of such transitions is accounted for TypeScript and flow, and often, developers faced with more problems than they were before.

I wasn't the exception. Moving to a new project, I started using TypeScript and was disappointed. Luckily in my next project I used ClojureScript and it was like everything is illuminated!

marwei

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

1. List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

2. Reset the consumer offset for a topic (preview)

josteink

On why stateful code is bad
===========================

STUDENT: Sir, can I ask a question?
TEACHER: Yes!
STUDENT: How do you put an elephant inside a fridge?
TEACHER: I don't know.
STUDENT: It's easy, you just open the fridge and put it in. I have another question!
TEACHER: Ok, ask.
STUDENT: How to put a donkey inside the fridge?

solnic

class Function
  attr_reader :name, :fn

  class Composed
    attr_reader :left, :right

    def initialize(left, right)
      @left = left
      @right = right
    end

niquola

(ns simply.db
  (:require
    [clojure.java.jdbc :as jdbc]
    [clojure.string :as cs]
    [honeysql.core :as sql]
    [clj-time.core :as t]
    [clj-time.coerce :as tc]
    [simply.formats :as sf]
    [simply.valid :as sv]
    [environ.core :as env])

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

somebody32

Введение

Начать стоит отсюда. Не пугайтесь то, что это книга по незнакомой OS, эти термины практически везде одинаковые и здесь они изложены в понятной для начинающих форме.

http://www.qnx.com/developers/docs/6.4.1/neutrino/getting_started/s1_procs.html

Прочесть нужно треть главы до подраздела "Starting a process", если С не пугает, читайте полностью. После прочтения вы будете понимать, что такое process, thread, mutex, priorites, semaphores, scheduler, contex-switch, kernel states.

Ruby

stas

require 'mina/bundler'
require 'mina/rails'
require 'mina/git'
require 'mina/rbenv'  # for rbenv support. (http://rbenv.org)
# require 'mina/rvm'    # for rvm support. (http://rvm.io)

# Basic settings:
#   domain       - The hostname to SSH to.
#   deploy_to    - Path to deploy into.
#   repository   - Git repo to clone from. (needed by mina/git)

aderyabin

# encoding: utf-8

# needs to be installed 7za, pgdbf
namespace :kladr do
  PATH = 'tmp/kladr'

  def import_options(database=nil)
    host = ActiveRecord::Base.configurations[Rails.env]['host']
    user = ActiveRecord::Base.configurations[Rails.env]['username']
    host &&= "--host=#{host}"

maxlapshin

#!/usr/bin/env escript

-mode(compile).
-compile(export_all).


main([]) -> io:format("Usage: ~s URL [Count=1000]~n", [escript:script_name()]);
main([URL]) -> main([URL,"100"]);
main([URL,C] ) -> manage_workers(URL, [start_worker(URL, N) || N <- lists:seq(1,list_to_integer(C))]), ok.