> default values for function parameters function f(a, b, c, d) a = a or 1 b = b or 2 c = c or 3 d = d or 4 end > list

> default values for function parameters function f(a, b, c, d) a = a or 1 b = b or 2 c = c or 3 d = d or 4 end > list comprehensions https://news.ycombinator.com/item?id=14444215 https://news.ycombinator.com/item?id=14444215 > local is default, not global I think this is a con. > a simple class system if you need it I also think this is a con, because it limits flexibility. Here's my class system: Object = {} function Object:new() local self = setmetatable({}, {__index = self}) return self end And how to use it: local super = Object Shape = Object.new(super) function Shape:new(color) local self = super.new(self) self.color = color return self end local super = Shape RedShape = Object.new(super) function RedShape:new() local self = super.new(self, 0xff0000) return self end If I want to add multiple inheritance, or interfaces, it is easy. Because it is just metatables. With MoonScript this is not possible. > `export`, `from` and `import` keywords Sounds like a con to me. `require` is simple. > `+=`, `/=`, `*=` I agree with this one.