Alexandr Steinberg

Alexandr Steinberg

Member Since September 28, 2015

8,217

Total Points

Points are earned whenever you take an important action on Treehouse.
Learn more about when and how points are earned.

Skills & Experience

  • Company

    Steltix

104 Achievements

  • Achievement

    Rails Resource Index

    Rails Routes and Resources

    Achieved

    Apr 15, 2023

    Rails Resource Index
  • Achievement

    Practice Updating Resources

    Practice Ruby on Rails Basics

    Achieved

    Apr 15, 2023

    Practice Updating Resources
  • Achievement

    Practice CRUD Operations

    Practice Ruby on Rails Basics

    Achieved

    Apr 15, 2023

    Practice CRUD Operations
  • Achievement

    Practice Creating Scaffolds

    Practice Ruby on Rails Basics

    Achieved

    Apr 15, 2023

    Practice Creating Scaffolds
  • Achievement

    Adding a Model Attribute

    Ruby on Rails 5 Basics

    Achieved

    Apr 15, 2023

    Adding a Model Attribute
  • Achievement

    Using the Rails Console

    Ruby on Rails 5 Basics

    Achieved

    Apr 15, 2023

    Using the Rails Console
  • Achievement

    Build a Simple Contact List

    Ruby Loops

    Achieved

    Apr 15, 2023

    Build a Simple Contact List
  • Achievement

    Ruby Iteration

    Ruby Loops

    Achieved

    Apr 15, 2023

    Ruby Iteration
  • Achievement

    Ruby Loops

    Ruby Loops

    Achieved

    Apr 15, 2023

    Ruby Loops
  • Achievement

    Ruby Conditionals

    Ruby Basics

    Achieved

    Apr 15, 2023

    Ruby Conditionals
  • Achievement

    Ruby Numeric Types

    Ruby Basics

    Achieved

    Feb 10, 2023

    Ruby Numeric Types
  • Achievement

    Ruby Objects

    Ruby Basics

    Achieved

    Feb 10, 2023

    Ruby Objects
  • Achievement

    Ruby Strings and Escape Sequences

    Ruby Basics

    Achieved

    Feb 10, 2023

    Ruby Strings and Escape Sequences
  • Achievement

    Build a Grocery List Program

    Ruby Collections

    Achieved

    Feb 10, 2023

    Build a Grocery List Program
  • Achievement

    Introducing Large Language Models

    Introducing Large Language Models

    Achieved

    Feb 5, 2023

    Introducing Large Language Models
  • Achievement

    Ruby Hashes

    Ruby Collections

    Achieved

    Feb 5, 2023

    Ruby Hashes
  • Achievement

    Ruby Arrays

    Ruby Collections

    Achieved

    Jan 29, 2023

    Ruby Arrays
  • Achievement

    Handling Rails Requests

    Ruby on Rails 5 Basics

    Achieved

    Jan 29, 2023

    Handling Rails Requests
  • Achievement

    Creating Rails Apps

    Ruby on Rails 5 Basics

    Achieved

    Jan 29, 2023

    Creating Rails Apps
  • Achievement

    Build a Bank Account Class

    Ruby Objects and Classes

    Achieved

    Jan 28, 2023

    Build a Bank Account Class
  • Achievement

    Ruby Variables and Methods

    Ruby Objects and Classes

    Achieved

    Jan 28, 2023

    Ruby Variables and Methods
  • Achievement

    Ruby Objects and Classes

    Ruby Objects and Classes

    Achieved

    Jan 28, 2023

    Ruby Objects and Classes
  • Achievement

    Ruby Syntax

    Ruby Basics

    Achieved

    Jan 4, 2023

    Ruby Syntax
  • Achievement

    Getting Started with iOS Development

    Build a Simple iPhone App with Swift

    Achieved

    Jul 2, 2018

    Getting Started with iOS Development
  • Achievement

    Error Handling

    Error Handling in Swift

    Achieved

    Jun 29, 2018

    Error Handling
  • Achievement

    Creating Flexible Objects Using Protocols

    Protocols in Swift

    Achieved

    Jun 29, 2018

    Creating Flexible Objects Using Protocols
  • Achievement

    Protocol Basics

    Protocols in Swift

    Achieved

    Jun 27, 2018

    Protocol Basics
  • Achievement

    Objects and Optionals

    Enumerations and Optionals in Swift

    Achieved

    Jun 27, 2018

    Objects and Optionals
  • Achievement

    Introduction to Optionals

    Enumerations and Optionals in Swift

    Achieved

    Jun 27, 2018

    Introduction to Optionals
  • Achievement

    Introduction to Enumerations

    Enumerations and Optionals in Swift

    Achieved

    Jun 26, 2018

    Introduction to Enumerations
  • Achievement

    Differentiating Between Objects

    Object-Oriented Swift

    Achieved

    Jun 22, 2018

    Differentiating Between Objects
  • Achievement

    Class Inheritance

    Object-Oriented Swift

    Achieved

    Jun 22, 2018

    Class Inheritance
  • Achievement

    Classes in Swift

    Object-Oriented Swift

    Achieved

    Jun 15, 2018

    Classes in Swift
  • Achievement

    Complex Data Structures

    Object-Oriented Swift

    Achieved

    Jun 8, 2018

    Complex Data Structures
  • Achievement

    Adding Power to Functions

    Functions in Swift

    Achieved

    Jun 8, 2018

    Adding Power to Functions
  • Achievement

    Functions in Swift

    Functions in Swift

    Achieved

    Jun 8, 2018

    Functions in Swift
  • Achievement

    Data Binding with D3

    D3.js

    Achieved

    May 23, 2018

    Data Binding with D3
  • Achievement

    Selections with D3

    D3.js

    Achieved

    May 22, 2018

    Selections with D3
  • Achievement

    Building Page Templates in WordPress

    WordPress Theme Development

    Achieved

    May 8, 2018

    Building Page Templates in WordPress
  • Achievement

    Behavior Driven Development with Mocha & Chai

    JavaScript Unit Testing

    Achieved

    Nov 27, 2017

    Behavior Driven Development with Mocha & Chai
  • Achievement

    Introducing Unit Testing

    JavaScript Unit Testing

    Achieved

    Nov 26, 2017

    Introducing Unit Testing
  • Achievement

    What Do User Experience Designers Do?

    UX Basics

    Achieved

    Sep 3, 2017

    What Do User Experience Designers Do?
  • Achievement

    What is User Experience (UX)?

    UX Basics

    Achieved

    Sep 3, 2017

    What is User Experience (UX)?
  • Achievement

    Actions, Dispatch and Reducers. Oh my!

    Building Applications with React and Redux

    Achieved

    Aug 15, 2017

    Actions, Dispatch and Reducers. Oh my!
  • Achievement

    Modularizing the React Scoreboard Application

    Building Applications with React and Redux

    Achieved

    Aug 13, 2017

    Modularizing the React Scoreboard Application
  • Achievement

    Getting Started with Redux

    Building Applications with React and Redux

    Achieved

    Aug 13, 2017

    Getting Started with Redux
  • Achievement

    Going Further with Routing

    React Router 4 Basics

    Achieved

    Aug 12, 2017

    Going Further with Routing
  • Achievement

    Navigating, Nesting and Redirecting Routes

    React Router 4 Basics

    Achieved

    Aug 12, 2017

    Navigating, Nesting and Redirecting Routes
  • Achievement

    Getting Started with React Router

    React Router 4 Basics

    Achieved

    Aug 12, 2017

    Getting Started with React Router
  • Achievement

    Component Lifecycle

    React Basics (retired)

    Achieved

    Aug 12, 2017

    Component Lifecycle
  • Achievement

    Designing Dataflow

    React Basics (retired)

    Achieved

    Aug 12, 2017

    Designing Dataflow
  • Achievement

    Stateful Components

    React Basics (retired)

    Achieved

    Aug 12, 2017

    Stateful Components
  • Achievement

    Thinking in Components

    React Basics (retired)

    Achieved

    Aug 11, 2017

    Thinking in Components
  • Achievement

    First Steps in React

    React Basics (retired)

    Achieved

    Aug 9, 2017

    First Steps in React
  • Achievement

    Control Flow With Conditional Statements

    Swift Collections and Control Flow

    Achieved

    Jul 18, 2017

    Control Flow With Conditional Statements
  • Achievement

    Control Flow With Loops

    Swift Collections and Control Flow

    Achieved

    Jul 18, 2017

    Control Flow With Loops
  • Achievement

    Dictionaries in Swift

    Swift Collections and Control Flow

    Achieved

    Jul 17, 2017

    Dictionaries in Swift
  • Achievement

    Introduction to Collections

    Swift Collections and Control Flow

    Achieved

    Jul 17, 2017

    Introduction to Collections
  • Achievement

    Swift Operators

    Swift Basics

    Achieved

    Jul 17, 2017

    Swift Operators
  • Achievement

    Swift Types

    Swift Basics

    Achieved

    Jul 17, 2017

    Swift Types
  • Achievement

    An Introduction to Swift Programming

    Swift Basics

    Achieved

    Jul 17, 2017

    An Introduction to Swift Programming
  • Achievement

    Angular Basic Forms

    Angular Basics

    Achieved

    Jun 18, 2017

    Angular Basic Forms
  • Achievement

    Services in Angular

    Angular Basics

    Achieved

    Jun 18, 2017

    Services in Angular
  • Achievement

    Angular Components

    Angular Basics

    Achieved

    Jun 4, 2017

    Angular Components
  • Achievement

    Setting Up an Angular Application

    Angular Basics

    Achieved

    Jun 3, 2017

    Setting Up an Angular Application
  • Achievement

    Classes

    Introducing ES2015

    Achieved

    Jun 3, 2017

    Classes
  • Achievement

    Objects and New Collection Types

    Introducing ES2015

    Achieved

    Jun 3, 2017

    Objects and New Collection Types
  • Achievement

    Perfect

    C# Basics (Retired)

    Achieved

    Jan 30, 2017

    Perfect
  • Achievement

    The Cooler Parts of ES2015

    Introducing ES2015

    Achieved

    Jan 28, 2017

    The Cooler Parts of ES2015
  • Achievement

    Perform

    C# Basics (Retired)

    Achieved

    Jan 17, 2017

    Perform
  • Achievement

    Console I/O

    C# Basics (Retired)

    Achieved

    Jan 16, 2017

    Console I/O
  • Achievement

    Prepare and Plan

    C# Basics (Retired)

    Achieved

    Jan 16, 2017

    Prepare and Plan
  • Achievement

    Introduction to Node.js

    Node.js Basics (2014)

    Achieved

    Jan 1, 2017

    Introduction to Node.js
  • Achievement

    ES2015 Basics

    Introducing ES2015

    Achieved

    Dec 28, 2016

    ES2015 Basics
  • Achievement

    Improving Our Todo App

    AngularJS Basics (1.x)

    Achieved

    Sep 9, 2016

    Improving Our Todo App
  • Achievement

    Services in Angular

    AngularJS Basics (1.x)

    Achieved

    Sep 9, 2016

    Services in Angular
  • Achievement

    Using Angular's Built-in Directives

    AngularJS Basics (1.x)

    Achieved

    Sep 9, 2016

    Using Angular's Built-in Directives
  • Achievement

    Controllers and Scope

    AngularJS Basics (1.x)

    Achieved

    Sep 9, 2016

    Controllers and Scope
  • Achievement

    Getting Started with Angular

    AngularJS Basics (1.x)

    Achieved

    Sep 9, 2016

    Getting Started with Angular
  • Achievement

    Introduction to Brand Identity

    Brand Identity Basics

    Achieved

    Mar 15, 2016

    Introduction to Brand Identity
  • Achievement

    Constructor Functions & Prototypes

    Object-Oriented JavaScript (2015)

    Achieved

    Feb 24, 2016

    Constructor Functions & Prototypes
  • Achievement

    Introduction to Methods

    Object-Oriented JavaScript (2015)

    Achieved

    Feb 24, 2016

    Introduction to Methods
  • Achievement

    PHP Conditionals

    PHP Basics (Retired)

    Achieved

    Feb 4, 2016

    PHP Conditionals
  • Achievement

    PHP Datatypes

    PHP Basics (Retired)

    Achieved

    Feb 4, 2016

    PHP Datatypes
  • Achievement

    PHP Data & Structure

    PHP Basics (Retired)

    Achieved

    Feb 4, 2016

    PHP Data & Structure
  • Achievement

    PHP Getting Started

    PHP Basics (Retired)

    Achieved

    Feb 4, 2016

    PHP Getting Started
  • Achievement

    Selecting Elements and Adding Events with JavaScript

    Interactive Web Pages with JavaScript

    Achieved

    Jan 25, 2016

    Selecting Elements and Adding Events with JavaScript
  • Achievement

    DNS Basics

    Technology Foundations

    Achieved

    Jan 2, 2016

    DNS Basics
  • Achievement

    Data, Databases and SQL

    SQL Basics

    Achieved

    Dec 24, 2015

    Data, Databases and SQL
  • Achievement

    Working with Media in WordPress

    WordPress for Website Owners

    Achieved

    Dec 20, 2015

    Working with Media in WordPress
  • Achievement

    Customizing WordPress Themes

    How to Make a Website with WordPress

    Achieved

    Dec 20, 2015

    Customizing WordPress Themes
  • Achievement

    WordPress Themes

    How to Make a Website with WordPress

    Achieved

    Dec 20, 2015

    WordPress Themes
  • Achievement

    Installing Wordpress

    How to Make a Website with WordPress

    Achieved

    Dec 20, 2015

    Installing Wordpress
  • Achievement

    Owning a WordPress Site Long Term

    WordPress for Website Owners

    Achieved

    Dec 20, 2015

    Owning a WordPress Site Long Term
  • Achievement

    WordPress Community Management

    WordPress for Website Owners

    Achieved

    Dec 20, 2015

    WordPress Community Management
  • Achievement

    Adding and Editing Content

    WordPress for Website Owners

    Achieved

    Dec 20, 2015

    Adding and Editing Content
  • Achievement

    Getting a WordPress Site

    WordPress for Website Owners

    Achieved

    Dec 20, 2015

    Getting a WordPress Site
  • Achievement

    Getting Started with WordPress

    Getting Started with WordPress

    Achieved

    Dec 20, 2015

    Getting Started with WordPress
  • Achievement

    JavaScript and the DOM

    Interactive Web Pages with JavaScript

    Achieved

    Dec 19, 2015

    JavaScript and the DOM
  • Achievement

    AJAX and APIs

    AJAX Basics (retiring)

    Achieved

    Oct 2, 2015

    AJAX and APIs
  • Achievement

    jQuery and AJAX

    AJAX Basics (retiring)

    Achieved

    Oct 2, 2015

    jQuery and AJAX
  • Achievement

    Programming AJAX

    AJAX Basics (retiring)

    Achieved

    Sep 30, 2015

    Programming AJAX
  • Achievement

    AJAX Concepts

    AJAX Basics (retiring)

    Achieved

    Sep 29, 2015

    AJAX Concepts
  • Achievement

    Newbie

    Achieved

    Sep 28, 2015

    Newbie