Missing argument: 3 expected but 2 passed

[Magnesus]

I am using Map<String, Dynamic>.

When the value is a String this line works only in JS target:

if(mymap["key"].indexOf("text")<0) // do something

It throws a runtime error in HL target: Missing argument: 3 expected but 2 passed

To make it work in HL I have to go to the length of making sure the compiler knows it is a string:

var str:String = mymap["key"]; if(str.indexOf("text")<0) // do something

Is it the expected behaviour? Would be nice if the code behaved the same war on both targets or threw error/warning during compilation and not crash at runtime like it does now.

Newest version of haxe.

[Simn]

You're using Dynamic, so the compiler can't do anything with it and you're at the mercy of the run-time, which may or may not do anything useful with it.

Having said that, I thought dynamic calls were supposed to support missing optional arguments. Does this also fail with Reflect.callMethod?

[Poobslag]

I encountered the same problem; I am using an Array<Array<Dynamic>> and the following call fails on HashLink with a 'missing argument' error:

var randomChats:Array<Array<Dynamic>>
// ...
randomChats[i].indexOf(str)

I can work around the issue with an explicit cast:

var randomChats:Array<Array<Dynamic>>
// ...
cast(randomChats[i], Array<Dynamic>).indexOf(str)

[Magnesus]

Another workaround if I remember correctly is just:

var s:String = randomChats[i]; s.indexOf(str)

Haxe has to know it is a string.