Unions

Get introduced to the concept of unions.

We'll cover the following

- Introduction

Introduction

Unions, a low-level feature inherited from the C programming language, allow more than one member of the user-defined type to share the same memory area. Unions are very similar to structs with the following main differences:

Unions are defined by the union keyword.
The members of a union are not independent; they share the same memory area.

Just like structs, unions can have member functions. The examples below will produce different results depending on whether they are compiled on a 32-bit or a 64-bit environment.
Naturally, struct objects are as large as necessary to accommodate all of their members:

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Introduction

Lifetimes, null Value and the is Operator

Type Conversions

Structs

Variable Number of Parameters

Function Overloading and Member Functions

Constructor and Other Special Functions

Operator Overloading

Introduction to Classes

Inheritance

The Object Class

Interfaces

destroy and scoped

Modules and Libraries

Encapsulation and Protection Attributes

UFCS, Properties and Contract Programming

Templates

Pragmas, alias and with

Pointers

Bit Operations

Conditional Compilation

Function Pointers, Delegates, and Lambdas

foreach with Structs and Classes

Unions, Labels, goto and Tuples

More Templates

More Functions

Mixins

Ranges

static foreach and Parallelism

Message Passing Concurrency

Data Sharing Concurrency

Fibers

Memory Management

User Defined Attributes (UDA) and Operator Precedence

Conclusion

Unions

Introduction