how does the haxe3 new map works?

[davy zhang]

I copied the code from the mannual it doesn't compile.

simple as 

var map = new Map();

it gives me a compile error:

Type parameters of multi type abstracts must be known (for IMap<Unknown<0>, Unknown<1>>)

which map should I use?

I am using haxe3.0.1

[Luca]

var map = new Map<String, Int>();

will compile

var map:Map<String, Int> = new Map();

will compile

var map = new Map();

map["hiya"] = 10;

will also compile.

The problem with trying to compile 'JUST' 'var map = new Map();' is the compiler doesn't have enough information to infer the type parameters.