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Language Features and Quirks

What Questions do I have​

The use of classes with the I prefix such as IClassName?

What is the async model in c#? Any quirks I need to know?

Decorators in c#?

public TodoContext(DbContextOptions<TodoContext> options)
    : base(options)
  • What does the : base(options) syntax represent?

Attributes: [DataAttribute] syntax using a annotation enclosed in [ and ] square brackets

  • E.G. [SerializeField] exposes the serializable field in the Unity Editor?
  • Used to associate metadata or declarative information with code.

using statement --> Disposes of context after statement has completed execution

  • We use this when seeding our first data data models in our web application.
  • Where would this feature be useful?

Best way to compare strings

Interfaces

Lambdas

LINQ

Null Coalescing operator / Nullable Reference Types

  • What does a = null!; assignment represent?
  • This is the null forgiving operator --> null! applies the ! operator to the value null
    • Overrides nullability of null --> Tells compiler null is a non-null type
    • This allows null to be safely accessed
    • WARNING: This operator negates the compiler check for null safety. We shouldn't use it in our code.

Code Generators

  • Source Generators

yield return

  • IAsyncEnumerable
  • Async Streaming
  • TAP

Reflection

Roslyn analysers

Generics

  • Extension methods
  • Type guards

Expression Trees

IQueryable / Queryprovider

  • convert to SQL

Records

Pattern matching

Multithreading

Actions

  • Side effects? For encapsulation?