The C# You Actually Use

1. What is the primary purpose of using records in C# as discussed in this lesson?

To create mutable entities To provide value-based equality and immutable types To define complex data types To enhance performance in looping operations

2. When using nullability in C#, what does the notation 'string?' signify?

The string is always non-null The string might be null The string is guaranteed to have a value The string cannot be empty

3. Which C# feature allows classes to take constructor parameters in the declaration, reducing boilerplate code for Dependency Injection?

File-scoped namespaces Primary constructors Auto-properties Record types

4. What is the recommended method to safely check if a string variable has user input as per the lesson?

string.Length > 0 string.IsNullOrEmpty() string.IsNullOrWhiteSpace() string.Equals()

Continue: LINQ and Collections → Review this lesson Retake quiz