Values and Types

Gravity is a dynamically typed language so variables do not have a type, although they refer to a value that does have a type. In Gravity everything is an object (with methods you can call and instance variables you can use). Basic built-in types are of class Object, Int, Float, String, Bool, Null, Class, Function, Fiber, Instance, List, Map and Range.

Manifest Typing

Gravity supports manifest typing, so you can specify which type is associated with an Object with a syntax like:

var s:String = "Hello World";
var n:Int = 100;

It can also be used in func parameters:

func sum (a:Int, b: Int) {
    return a + b;

Manifest typing is currently used in autocompletion feature, full static type checking will be introduced in a future release.