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Премиум
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    How to make the most of this course
  2. Урок 2. 00:04:14
    Introduction to Dart
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    Introduction to Dartpad
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    Section Intro
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    The main method
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    Hello world
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    Variable declaration and initialization
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    Basic types
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    [Exercise] Printing variables
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    String concatenation & interpolation
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    [Exercise] String interpolation
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    String escaping
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    Multi-line strings
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    Basic String operations: uppercase and lowercase
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    Initialization vs Assignment
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    [Exercise] Lowercase and uppercase strings
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    Finding and replacing strings
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    Conversions between types
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    Arithmetic operations
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    [Exercise] Temperature conversion
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    Increment & decrement operators
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    Logical & Relational operators
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    Ternary access operator
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    Hex format, bitwise & shifting operators
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    Comments
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    Expressions & statements
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    Section Intro
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    Static vs Dynamic Languages
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    Type inference with var
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    The final keyword
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    The const keyword
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    [Exercise] var, final and const
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    The dynamic keyword
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    Section Intro
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    If/else statements
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    [Exercise] if/else statements
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    while loops
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    for loops
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    [Exercise] fizz buzz
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    break and continue
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    switch statements
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    Enumerations
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    [Exercise] Simple Calculator
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    Section Intro
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    Installing the Dart SDK
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    Installing and configuring VS Code
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    Project Brief: Rock, Paper & Scissors
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    Creating a command line app
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    Pseudocode for the game logic
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    Getting user input with stdin from dart:io
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    Implementing the game loop
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    Implementing the game logic
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    Section Intro
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    Lists
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    [Exercise] Sum of the items in a list
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    List methods
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    Type annotations with lists
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    Using var, final, const with lists
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    Sets
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    [Exercise] Sets
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    Maps
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    The as operator
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    Null values
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    Iterating on maps
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    [Exercise] Pizza Ordering
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    Nested Collections
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    [Exercise] Restaurant ratings
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    Collection-if
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    Collection-for
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    Spreads
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    [Exercise] Shopping List
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    Copying collections
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    Section Intro
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    Parsing command line arguments
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    Reading files line by line
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    Pseudocode for the processing logic
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    Implementing the processing logic
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    Introduction to Null Safety
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    Nullable and non-nullable variables
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    Flow Analysis: Promotion and Definite Assignment
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    The assertion operator
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    The if-null operator
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    Null Safety with type inference
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    Null Safety with collections
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    The conditional access operator & the billion dollar mistake
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    Section Intro
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    Intro to functions
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    Function arguments
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    Return values
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    [Exercise] Sum of a list of numbers
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    Named and positional arguments
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    Required and default values
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    Default positional arguments
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    [Exercise] Pizza ordering with functions
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    Fat arrow notation (=>)
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    The global and local scope
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    Inner Functions
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    Global mutable state and functions with side effects
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    Section Intro
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    Anonymous functions
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    Functions as first class objects
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    Function types
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    Closures
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    The forEach method
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    The map method
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    Iterable and toList()
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    Code reuse with anonymous functions and generics
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    The where and firstWhere methods
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    [Exercise] Implement the where function
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    [Exercise] Implement the firstWhere function
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    The reduce method
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    Combining functional operators
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    Section Intro
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    Introduction to classes
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    Instance methods
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    Class constructors and the this keyword
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    Initializer lists and the shorthand syntax
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    Classes with immutable members
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    [Exercise] Creating a Person class
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    Type safety with classes
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    Const constructors
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    Named constructors
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    Named constructors: temperature example
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    Getters and setters
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    [Exercise] Restaurant ratings with classes
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    Static methods and variables
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    Private variables and methods
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    Wrap up
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    Section Intro
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    VS Code Dart Setup with Null Safety
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    Introduction to inheritance / subclassing
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    The super constructor
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    Overriding methods
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    Abstract classes
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    [Exercise] Area and Perimeter
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    Interfaces and the difference between implements and extends
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    The base Object class
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    The toString() method
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    The equality operator and the covariant keyword
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    [Exercise] Implement the + and * operators
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    Overriding hashCode and the Equatable package
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    Using classes with generics
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    Composition vs inheritance: Flutter widget hierarchy example
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    Factory constructors and reading JSON data
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    [Exercise] JSON Serialization
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    Copying objects with copyWith
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    The cascade operator
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    Simple eCommerce app: Overview
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    Creating the Product, Item, Cart classes
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    Adding the interactive prompt
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    Adding items to the cart
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    Checkout functionality
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    Project structure and wrap-up
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    Section Intro
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    Creating and using mixins
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    Mixins: Drawbacks
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    Extensions
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    Extensions with generic type constraints
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    [Exercise] Range extension
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    Section Intro
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    Errors vs Exceptions
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    Assertions
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    Exceptions: throw, try, catch, finally, rethrow
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    [Exercise] Email validation
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    Section Intro
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    Futures, then, catchError, whenComplete
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    async and await
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    Future.value and Future.error
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    [Exercise] Countdown with Futures
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    Streams
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    Stream generators: async* and yield
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    [Exercise] Fizz-buzz with streams
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    Stream constructors
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    Stream methods
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    Single / multiple subscription streams
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    Weather App Overview
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    REST API Basics
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    Creating the command-line app
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    Creating a Weather API Client with the Dart http package
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    Reading the response status code and data
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    Completing the Weather API client
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    Parsing JSON Data
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    Error Handling and Wrap up
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    BONUS Content & Next Steps