My 10 favorite haxe language features in 30 mins

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haxe language
my ten favorite
features in 30 mins

haxe
❤ story ?

what is haxe?
● free and open source toolkit

what is haxe?
● free and open source toolkit
● statically typed programming language

what is haxe?
● free and open source toolkit
● statically typed programming language
● cross compiler for 10 targets (C++,...

what is haxe?
● free and open source toolkit
● statically typed programming language
● cross compiler for 10 targets (C++,...

what is haxe?
● free and open source toolkit
● statically typed programming language
● cross compiler for 10 targets (C++,...

haxe
hello world
http://try.haxe.org/#05485

conditional compiling
works in pair with compiler arguments

conditional compiling
works in pair with compiler arguments

static analyser
code optimization
● unused variables
● unreachable code
● and more...

type inference
@compile-time
automatic deduction of the data type
of an expression

type inference

type inference
less verbosity
http://try.haxe.org/#42127

type inference
how does it work?

type inference
works with composite types

static extension
augmenting types

static extension
augmenting types

array comprehension
initialize arrays with ease

abstract
modify/augment concrete type behaviors

abstract
example
http://try.haxe.org/#859e3

abstract
enums abstract
http://try.haxe.org/#0d1A7

abstract
operators overloading

abstract
operators overloading

abstract
operators overloading

abstract
operators overloading

abstract
operators overloading

abstract
implicit casting

abstract
implicit casting

abstract
implicit casting

abstract
implicit casting

abstract
implicit casting

inlining
Allows function bodies
to be directly inserted
instead of calling them

inlining
code optimization
http://try.haxe.org/#B150C

metadata
@nnotations at runtime and compile-time

metadata
annotations @runtime and @compile-time
● class declaration

metadata
annotations @runtime and @compile-time
● class declaration
● any class field

metadata
annotations @runtime and @compile-time
● class declaration
● any class field
● enum declaration

metadata
annotations @runtime and @compile-time
● class declaration
● any class field
● enum declaration
● enum constructo...

metadata
allowed values
● constants

metadata
allowed values
● constants
● array declarations

metadata
allowed values
● constants
● array declarations
● object declarations

metadata
example on class fields

metadata
example on class fields

metadata
constant identifier

pattern matching

pattern matching
switch expression
Process of branching depending
on a value matching

pattern matching
| operator

pattern matching
match against fields

pattern matching
match against values

pattern matching
with guards

pattern matching
with extractors
Allows to check if transformations
match values

pattern matching
with extractors

pattern matching
with extractors

macros

macros
black magic @compile-time

macros
black magic @compile-time
● Initialization macro

macros
black magic @compile-time
● Initialization macro
● Build macro

macros
black magic @compile-time
● Initialization macro
● Build macro
● Expression macro

macros
expression example

macros
build example

macros
simple build example

macros
annotation/reflection parser example
hexMachina annotation reader

real macro use case
DSL compilation

DSL PARSING/ASSEMBLING FLOW
Xml Parser
parses

DSL PARSING/ASSEMBLING FLOW
Xml Parser Assembler
parses translates

DSL PARSING/ASSEMBLING FLOW
Xml Parser Assembler
Context
Factory
parses translates
Runtime @pplication
builds

DSL PARSING/COMPILING FLOW
Xml Parser Assembler
CompileTime
Factory
parses translates
Generated Code
generates

After compilation
JavaScript is generated

DSL CHECKING @compile time
type not found

and now...

best feature ever

best feature ever
.

best feature ever
..

best feature ever
...

best feature ever
guess what

best feature ever
❤

haxe community
● haxelang - google group
● twitter - #haxe
● stack overflow
● HaxeFoundation - github
● haxe.io

questions ?

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