Use object as string map

1

I would like to create a function in Haxe, to be utilized, from (existing) javascript and php.

In JavaScript I was used to use a Plain object as a map (before es5 Maps), in haxe I would probably need to use Map<String,T> for this behavior.

The problem is that wen compiling into javascript it compiling to a special class having an internal h parameter holding the elements.

What is the preferred method to make a haxe function that could convert a plain js object, or php assoc array, into a string map?

2

Hello,

there is a object map available in Haxe

3

While a Map is probably a better choice in many cases, Haxe also supports anonymous structures that work similarly to JS plain objects. If you type the variable as Dynamic, it basically works the same as JS. If you want the compiler to provide a little more protection for you, you can create a typedef to specify which fields are available.

4

The problem with typedef is that it generates unwanted fields in the generated object. At least in the Lua target

typedef X = {
	var cmd:String;
}

_hx_o({__fields__={cmd=true},cmd="Yo"})
5

Does it generate unwanted fields if you use Dynamic instead?

var myObj:Dynamic = {};
myObj.cmd = "Yo";
6

Yes, because they are created with this function:

local function _hx_e()
  return setmetatable({__fields__ = {}}, _hx_obj_mt)
end
7

Could I make an anonymous structure that is also itirable for optional fields?