C# 12 In A Nutshell

Introducing C# & .net

Object orientation

unified type system
interfaces

Type safety

static typing (type safety at compile time)

Memory management

garbage collector
unsafe block

CRLs, BCLs & runtimes

JIT, AOT & interpretation
managed code
intermediate language
common language runtimes
reflection
base class libraries

C# language basics

A first C# program

type organization
nested namespaces
namespace usage & using keyword
statement blocks

Compilation

assemblies
entrypoints

Syntax

identifiers & their conventions
keywords & their usage as identifiers
contextual keywords

Type basics

types
variables & constants
predefined types
data & function members
constructors & instantiation
instance & static members
static classes
the main method & top level statements
conversion
implicit conversion & explicit casting
value & reference types, assignment operation behaviour for each & nullabality
primitive types

Numeric types

inference of numerical literal types
increment & decrement operators
checked & unchecked keywords
compile time overflow checking
arithmetics of 8- & 16-bit integral types
NaN values & checking for them

Boolean types & operators

default notion of equality for reference types
short-circuit evaluation of conditional operators
the ternary operator

String & characters

escape sequences
unicode characters as in literal form
string comparison
verbatin strings
raw string literals
interpolated strings

Arrays

definition of array data type
array initialization expression
preinitialization of elements
value vs reference elements
indices & the index type
ranges & the range type