Habitat

Edit property definitions with the underscore (_) proxy.

luke._.fullName.get = (self) => `${self.firstName} ${self.lastName}`

luke.fullname //"Luke Wilson"

Static Typing

You can specify the type of a property.

luke._.name.type = Text

luke.name = 24 //Type Error!

Type Checking

"Luke".is(String)
(25).is(Number)
[6, 8].is(Array)

Type Conversion

"24".as(Number)
(24).as(String)

Custom Types

const UpperCase = new Type({
	check: (s) => s == s.as(UpperCase),
	convert: (s) => s.toUpperCase(),
})

"HELLO".is(UpperCase) //true

Match

input.match (
	String,     "It's a string",
	"Luke",     "It's my name",
	[Int, Int], "It's a list of two integers",
	Any,        "It's something else",
)

Matcher Function

const fibonnaci = matcher (
	[0], 0,
	[1], 1,
	[UInt], n => fibonnaci(n-1) + fibonacci(n-2),
)

Functions

You can call functions without brackets.

print.x= "Hello world!"

friends.o.forEach.x= friend => print(`Hello ${friend}`)

Objects

You can assign multiple properties to an object at once.

luke.o={
    name: "Luke",
    age: 25,
}

Check out the wiki or something.