Dmitry Shlensky

shlensky

  • 18 Courses Completed
  • 112 Levels Completed
  • 32 Screencasts Watched
  • 301,750 Total Points

Achievement Badges

Progress Report

Electives: 1 Course Completed

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Discover DevTools

Electives

Learn how Chrome DevTools can sharpen your dev process and discover the tools that can optimize your workflow and make life easier.

  • Elements

    Dig into the elements panel, learn how to make changes to the DOM and update styles.

  • Sources

    New workflows to speed up your development time.

  • Console

    Review the DevTools console and learn how to examine exceptions and use timesaving shortcuts.

  • Debugging

    Great workflows for debugging problems in your JavaScript.

  • Network

    Speed up your network interactions using the network tab and the page speed extension.

  • Profiles

    Get familar with your applications rendering performance and learn how to use CPU profiling to identity performance problems.

  • Memory

    Learn how to find and identify memory leaks in your application.

Electives: 12 Screencasts Watched

Ruby: 5 Courses Completed

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Rails 4: Zombie Outlaws

Intermediate Ruby on Rails

Learn to build faster and more secure web apps with Rails 4. Review the Rails updates that will help get your apps up to speed on Rails 4 best practices.

  • A Bloody Tale of Revenge

    Support for Ruby 1.9.3, ThreadSafety, and Routes

  • The Hangman's Daughter

    Changes to the ActiveRecord API, and more on ActiveRecord and changes to ActiveModel

  • Dead Man Walking

    Whitelisting user parameters with Strong Parameters and using Remote Forms. Reviewing new syntax for controller Filters, working with Session & setting Custom Flash Types

  • Concerning the Events of Santa Maria

    Reviewing new view helpers & the Ruby template handler

  • The Killing Fields

    Learning the new test structure

  • The Undead Express

    Declarative ETags, the new Dalli memcache client, and working with Cache Digests

  • Why's and Wherefores

    Streaming with ActionController::Live and faster page loading with Turbolinks

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Ruby Bits

Ruby Language

Learn the core bits every Ruby programmer should know. This Ruby tutorial builds upon the basics to keep enhancing your Ruby knowledge.

  • Expressions

    An overview of best practices for writing expressions in Ruby

  • Methods and Classes

    passing optional arguments, raising exceptions, using begin/rescue/end, attr_accessor vs. attr_reader

  • Classes

    Encapsulation, instance & private methods, inheritance, and refactoring

  • ActiveSupport

    Helpers that are built on top of the Ruby Language (arrays, dates, hashes, numbers, and strings

  • Modules

    Namespacing methods, Mixins vs. class inheritance, method hooks, ActiveSupport::Concern

  • Blocks

    Iterating and yielding, passing arguments, returning variables, Enumerable, and refactoring

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Ruby Bits Part 2

Ruby Language

Learn the more advanced bits every Ruby programmer should know. This advanced Ruby tutorial will help you take your Ruby knowledge to the next level.

  • Blocks, Procs & Lambdas

    An advanced look at code blocks and how to use procs and lambdas to encapsulate blocks of code

  • Dynamic Classes & Methods

    Techniques for defining, finding, and calling methods dynamically at runtime

  • Understanding Self

    A look at how Ruby uses the value of self and how to change self as your program executes

  • Missing Methods

    Using method_missing to capture, delegate, and respond to methods that don't exist

  • DSL Part 1

    A brief intro to writing Domain Specific Languages in Ruby

  • DSL Part 2

    More advanced tips and techniques for writing DSLs

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Rails 4 Patterns

Intermediate Ruby on Rails

Learn helpful patterns and techniques for building and maintaining complex Rails applications. Make your application easily scale in size and complexity.

  • Models

    Use Models to encapsulate core business logic and avoid common ActiveRecord pitfalls.

  • Scopes and Class Methods

    Learn the intricacies of using class methods that run queries, and learn the benefits of using scopes.

  • Concerns

    Review how to extract reusable code into Model and Controller concerns.

  • Decorators

    Extract view logic out of Models with Decorators.

  • ActiveModelSerializers 1

    The basics of using ActiveModelSerializers to build a JSON API.

  • ActiveModelSerializers 2

    Use ActiveModelSerializers to simplify your JSON API.

  • FineTuning

    Speed up queries, secure user parameters and manage your processes.

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Rails Best Practices

Discontinued

  • Controllers in Space

    Fat model/skinny controller, named scopes, scopes with lambda, default scopes, model creation scopes, skipping a filter

  • Controller Command

    Nested attributes, models without the database, using Presenters, rejecting SQL injection, Rails 3 responder syntax

  • Model Pitfalls

    Basic & compound indices, protecting your attributes, using default database values, using callbacks properly, improving validation, database seeding

  • Model Bert

    Optimizing n+1 queries, using counter_cache, batches of find_each, applying The Law of Demeter, using to_s and to_param in the model

  • Froggy Views

    Refactoring views, using helpers, rendering content with partials, handling empty strings, using content_for, meta yield

Ruby: 5 Screencasts Watched

Git: 2 Courses Completed

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Try Git

Git

Learn how to use Git by reviewing the basic concepts of Git version control. Try out this introductory course that was created with GitHub.

  • Discover Git

    Discover the basics of Git, including how to initialize a repo. Learn how to add, commit, and push your code to GitHub.

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Git Real

Git

Learn more advanced Git by practicing the concepts of Git version control. Increase your Git knowledge by learning more advanced systems within Git.

  • Introduction

    Learn the basics of Git

  • Staging & Remotes

    Add and remove changed files, and work with remote repositories

  • Cloning & Branching

    Clone repositories and learn how to work with multiple branches

  • Collaboration Basics

    Work simultaneously with multiple users

  • Branching

    Work with remote branches and reference commits

  • Rebase belong to us

    Optimize merging and fix merge conflicts

  • History and Configuration

    Learn how to configure and view commit logs

JavaScript: 8 Courses Completed

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jQuery: The Return Flight

jQuery

Learn Ajax and add more interactivity to your projects. Discover how to organize your code using jQuery Plugins and Promises.

  • Ajax Basics

    Learn what Ajax is and how it can be used.

  • JavaScript and jQuery

    Organize your jQuery and JavaScript.

  • Ajax With Forms

    Learn about how to send data to the server and work with JSON.

  • Utility Methods

    Learn about some handy utility methods including $.each and $.map while working with complicated JSON data.

  • jQuery Plugins

    Create your own reusable jQuery plugin.

  • Promises

    Use promises to make your Ajax calls reusable and organized.

  • Warming Up

    Learn how to create an Ember application, set up your first Handlebars template, and meet the Ember Router.

  • Rendering the Flame

    Expand on Handlebars with Helpers and learn how Ember Controllers can provide data for your templates.

  • A Route Through the Woods

    Start using resource routes, dynamic segments in your URLs and finish off with nested routes.

  • Acorn Models and Pinecone Data

    We'll show how to use Ember Data to create related models using the Fixture Adapter and the REST Adapter.

  • Controlling Our Growth

    Dig deeper into ArrayControllers, computed properties and the advantages of nesting your controllers.

  • The Template Forest

    Use Ember Components, partials and the Embers Render method to keep your Templates organized.

  • Acting on Instinct

    Put the pieces together then learn how to react to user events.

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Shaping Up With AngularJS

Client-side Frameworks

AngularJS allows your application to have an expanded HTML library. Learn to add behavior to your HTML and speed up your application’s responsiveness.

  • Flatlander's Gem Store

    Get comfortable with expressions by beginning to build a gem store.

  • Built-in Directives

    Use directives to add a gallery and tabs to the gem store.

  • Forms

    Give the gem store review functionality by using AngularJS forms.

  • Custom Directives

    Create custom directives for more organized and maintainable AngularJS code.

  • Services

    Create a new module and learn to use the $http service to get real data into the gem store.

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Real-time Web with Node.js

Server-side Frameworks

Discover how the Node framework can help you write server-side code and build lightweight, scalable network applications.

  • Intro to Node.js

    An overview of Node.js, blocking vs. non-blocking code, reading files, issuing requests

  • Events

    Event emitters, event requests, event listening

  • Streams

    Reading, writing, piping, solving backpressure

  • Modules

    Exporting, npm installing, dependencies, and semantic versioning

  • Express

    Routes, rendering, layouts, url building, express servers

  • Socket.io

    Listening for, broadcasting, and answering questions, saving client data

  • Persisting Data

    Redis, working with lists, persisting, emitting, and limiting questions

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Anatomy of Backbone.js

Client-side Frameworks

Learn Backbone.js and start building sophisticated and structured web apps. Try out Backbone’s JavaScript library with a RESTful JSON interface.

  • Introduction

    Learn the very basic of Models and Views.

  • Models

    More on Models, such as syncing to/from the server.

  • Views

    View events, templates, and customization.

  • Models & Views

    More on how Models and Views work together with event binding.

  • Collections

    Working with a set of models with Backbone Collections.

  • Collection Views

    Displaying a Collection with a Collection View.

  • Router & History

    Supporting pushState history and multiple URLs.

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Anatomy of Backbone.js Part 2

Client-side Frameworks

Learn more advanced Backbone.js for building sophisticated and structured web apps. Take your front-end to the next level with the Anatomy of Backbone Part 2.

  • More Models

    Getting your models to work with non-standard servers.

  • Customizing Collections

    Handling pagination in collections, sorting collections, and building aggregate functions.

  • Real Routes

    Handling optional parameters, limiting parameters to integers using regex, handling catch-all routes.

  • Varying Views

    Using an existing element, handling extra initialization options, escaping HTML, changing handling event bindings between Models and Views.

  • Working with Forms

    Build an ajax Form View to create and edit model objects.

  • App Organization

    Namespacing your App objects, building an App View to handle link clicks inside of Backbone, boostrapping data.

  • Customizing Backbone

    Using Mustache.js templates instead of underscore.js, replacing your persistence strategy, utilizing localStorage.

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CoffeeScript

CoffeeScript

Learn CoffeeScript, the powerful little language that compiles into JavaScript. Take a sip of our CoffeeScript tutorial & learn to get more done with less code.

  • Variables and Functions

    An overview of variables and functions

  • Applied jQuery

    Converting jQuery to CoffeeScript

  • Conditionals & Operators

    Conditionals, chained comparisons, switch cases, and existential operators

  • Arrays, Objects, Iterations

    Using arrays, object literals, loops, list comprehension, and splat arguments

  • Applied jQuery II

    Understanding and using jQuery object notation

  • Object Orientation

    Classes, class inheritance, property arguments

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Building Blocks of Express.js

Server-side Frameworks

Express provides more robust features to your web application. Learn how to build Web APIs in Node using Express.

  • First Steps

    Installing Express and building some first routes.

  • Middleware

    Understanding middleware and building a custom logger.

  • User Params

    Reading user-submitted parameters.

  • Body Parser

    Adding routes for creating and deleting resources.

  • Refactoring Routes

    Using route instances and extracting code to route files.

JavaScript: 4 Screencasts Watched

HTML/CSS: 1 Course Completed

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Fundamentals of Design

Design

Improve the visual competency of any website or application by keeping design in mind. Learn the fundamental design principles of typography, color, and layout.

  • Typography

    Learn to recognize beautiful and functional type.

  • Colors

    Review color theory and application principles.

  • Layout

    Familiarize yourself with visual hierarchy and balance.

HTML/CSS: 10 Screencasts Watched

Elixir: 1 Course Completed

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Try Elixir

Getting Started With Elixir

Begin learning the basics of Elixir and take your first steps into the world of functional programming.

  • Modules & Functions

    Get started in the world of functional programming with Elixir by learning how to work with named functions.

  • The Pipe Operator

    Learn how to refactor nested function calls into an easier syntax by using the pipe operator.

  • Pattern Matching

    Explore how pattern matching works and how we can use it to remove if statements from our programs.

Database: 1 Screencast Watched