What's New in C# 8.0: Must Know for Every Developer

Explore how interfaces define contracts, require implementing classes to provide all members, and only support methods, properties, indexers, and events prior to C# 8.0.

Demonstrate default interface members in c# 8.0 with console demo, showing how a class can override and hide a default interface method and what happens when an implementation is missing.

Explore interface inheritance and explicit implementation in C# 8.0, demonstrating how to resolve member name conflicts with iBook and iBook better through explicit interface methods.

Demonstrate static methods and fields in interfaces in C# 8.0 with an iBook example, accessed via the interface name. The demo shows static fields are allowed; nonstatic members are not.

Learn how the static constructor in interfaces in C# 8.0 initializes static fields, enabling interface-level state not possible in earlier versions.

Demonstrate using constants in an interface by declaring string constants, showing no errors when referenced, and highlighting new interface features in this C# 8.0 update.

Explore how the null reference type in C# 8.0 catches nullability issues at compile time and prevents null reference exceptions in applications handling null values.

Shows the problem of not using nullable reference types in a C# 8.0 project, causing a runtime null reference exception when accessing a null book title.

Demonstrates two ways to enable or disable null reference types in C# 8: editing the project file or using the enable approach, and shows how to address possible null values.

Demonstrate nested property pattern matching in C# 8.0 by modeling an employee and its address, then validate the employee ID is five and the address is current using property patterns.

Explore a demo of less than and greater than operators in property pattern matching for C# 8.0, showing how id values above or below five drive true conditions.

combine switch statements with property pattern matching to calculate employee bonuses by id, illustrating senior, mid-level, and junior tiers and how to apply nested properties in C# 8.

Explore tuple pattern matching in C# 8.0 with the double pattern to assign multiple values, use a table for country and state combinations, and simplify complex conditionals.

Explore the null coalescing assignment operator in C#, using a left-hand field that is initially null to receive a right-hand value, then show that once non-null, it won’t be reassigned.

Explore static local functions in C# 8.0 and see how the static keyword prevents capturing outer variables in inner methods, making code safer and more predictable.

Discover the index from end operator ^ in C# 8.0, which lets you access the last elements of a sequence using the umbrella symbol rather than length minus one.

Demonstrate accessing array elements with the index-from-end (^) operator in C# 8.0, including first and last items, length minus one, and handling out-of-bounds errors.

Explore the range operator in C# 8.0, using the two dots syntax (start..end) to extract a sub array; start is inclusive, end is exclusive, enabling flexible data slicing.

Declare ranges and indices as variables, pass them into a sequence to retrieve data, and avoid hardcoding values while using either the index or the range.