Find duplicate values - .NET Tutorial

Contents

• Introduction Introduction

  • Welcome

    54s
  • What you should know

    53s
  • How to access the sample code on GitHub

    1m 43s
• 1. The Spirit of LINQ 1. The Spirit of LINQ

  • Why build a query engine in a programming language?

    5m 28s
  • Explore LINQ essential parts

    4m 37s
• 2. Work with LINQPad 2. Work with LINQPad

  • Why use LINQPad?

    1m 32s
  • Initial tour of LINQPad

    3m 52s
  • Set destination folder for course examples

    1m 54s
  • Explore the expression editor

    3m 9s
  • Explore the statements editor

    2m 32s
  • Show formatted output with the Dump method

    2m 59s
  • Explore the program editor

    1m 34s
  • Run a subset of code

    1m 55s
• 3. Key Parts of .NET 3. Key Parts of .NET

  • Implicit variable typing

    3m 6s
  • Anonymous types

    2m 27s
  • Object initializers

    1m 56s
  • Collection initializers

    3m 29s
  • Inline code with lambda expressions

    3m 46s
  • Extension methods

    3m 2s
  • More extension methods

    2m 2s
  • Generic types

    1m 46s
• 4. The Parts of a Query 4. The Parts of a Query

  • What sources are queryable?

    2m 56s
  • The Enumerable class

    1m 14s
  • Learn how to use the Enumerable static methods

    3m 14s
  • Learn how to use the Enumerable extension methods

    1m 3s
  • Learn how to use the Query Expression syntax

    4m 17s
  • What sources revisited

    3m 52s
  • Deferred execution: When does the query run?

    3m 35s
  • Combine methods with execution pipelines

    2m 19s
  • Combine extension methods and query expressions

    3m 2s
• 5. Generate 5. Generate

  • The Empty and DefaultIfEmpty methods

    2m 43s
  • The Repeat method

    1m 7s
  • The Range method

    1m 8s
• 6. Basics 6. Basics

  • The three types of query expressions

    2m 16s
  • Review query expression clauses

    4m 45s
  • Examples of three query expressions

    3m 16s
  • The select clause

    6m 26s
  • Learn how to use select to project into another type

    2m 41s
  • Select into anonymous type

    2m 16s
  • Learn how to use expressions with select

    2m 15s
  • Challenge: Write select expressions

    1m 28s
  • Solution: Write select expressions

    1m 27s
  • Index into another sequence

    2m 58s
• 7. Filtering 7. Filtering

  • The Where method

    3m 17s
  • Learn how to use logical operators with the Where method

    1m 47s
  • Explore the OfType class definitions

    2m 2s
  • The OfType method

    1m 33s
  • Challenge: Filter results with Where

    1m 30s
  • Solution: Filter results with Where

    2m 16s
• 8. Aggregation 8. Aggregation

  • Sum, Average, and other aggregates

    2m 44s
  • Create custom aggregates

    2m 13s
• 9. Groups and Other Stuff 9. Groups and Other Stuff

  • The GroupBy method

    2m 27s
  • GroupBy query expression

    1m 53s
  • GroupBy with ElementSelector

    2m 36s
  • GroupBy with ResultSelector

    2m 29s
  • Iterate over groups

    1m 44s
  • Combine two sequences

    3m 47s
  • Flatten sequence with SelectMany

    2m 15s
  • Challenge: Group results by color values

    2m 30s
  • Solution: Group results by color values

    1m 35s
• 10. Element Operations 10. Element Operations

  • First and Last methods

    1m 14s
  • The FirstOrDefault method

    1m 8s
  • The ElementAt method

    1m 16s
  • Single and SingleOrDefault methods

    1m 40s
• 11. Set Operations 11. Set Operations

  • The Distinct method

    1m 55s
  • The Intersect method

    52s
  • The Union method

    1m 18s
  • The Except method

    44s
  • Find duplicate values

    2m 25s
• 12. Quantify Data 12. Quantify Data

  • Learn how to use the Any method to detect empty sequence

    2m 1s
  • Learn how to use Any method to determine if element exists

    1m 1s
  • The Contains method

    1m 31s
  • The All method

    1m 5s
• 13. Partition 13. Partition

  • Skip and Take methods

    1m 7s
  • Conditional Skip and Take methods

    1m 8s
• 14. Other 14. Other

  • Learn how to use LINQ in a .NET application

    4m 11s
  • Learn how to use MoreLinq for extended query syntax

    3m 11s
  • Additional MoreLinq examples

    1m 53s
• Continue Your Journey Continue Your Journey

  • Next steps

    1m 1s