Variables and type inference Explicit type annotations String interpolation Numeric types Boolean expressions Null values Array literals Map literals Anonymous structures Dynamic type

if expressions switch expressions Pattern matching switch for loops while loops do while loops break continue try catch throw

Function declarations Optional parameters Default parameters Rest arguments Anonymous functions Closures Function values Generic functions Inline functions Local functions

Class declaration Constructors Instance fields Static fields Properties Getters and setters Inheritance Method override Interfaces Abstract classes

Enums Enum parameters Typedef Anonymous types Structural typing Generics Type parameters constraints Abstract types @:forward abstract Null<T>

Array map Array filter Array comprehension Map iteration StringMap IntMap ObjectMap Iterator protocol Iterable protocol Lambda helpers

Conditional compilation Compiler defines Metadata @:keep metadata @:native metadata Macros expression Build macros Target-specific code js.Syntax untyped escape hatch

Modules and imports Package declarations using static extensions Access modifiers final fields extern classes Resource embedding Sys.args FileSystem API Cross-target compilation