@mplatvoet: I don’t believe the discussion is about control flow at all. Using exceptions for control flow is bad, regardless of the exception. The discussion is about the fact that it’s sometimes nice if the compiler can force you to think about an error case as you write the code.

@cedric: that makes it control flow, whether you think it's bad or not ;-)

You probably have a wider definition of control flow than I do but regardless, I think the compiler forcing you to think about errors trumps a lot of other concerns.

I agree with you on that.

Robust code >>> vague feeling about the shape of the code

i like my code pear shaped.

Yeah, but right now the need to manually annotate methods with @Throws is a real pain - if you get it wrong, your Java API is bugged and can’t be properly used.

It’d be better if the compiler generated the right @Throws annotations automatically

Why not simply the method signature and let the checked boil up to whatever method calls it?

simply ? the method signature?

Well simply as in the solution, not the implementation.

i mean, I didn’t understand what you wrote, was there a word missing?

In bytecode the exception is part of the method signature right?

right.

So maybe the compiler can just add that the method signature depending on the code inside it

Not sure if this will always work for closures as Function needs to throw Exception as it is unknown what the containing code will be

Does kotlin-js support sealed class ? (It seem not, but it may be problem on my side)

Js backend doesn't support nested classes yet

ok, thank you for the confirmation

@ylemoigne: https://youtrack.jetbrains.com/issue/KT-4124 the issue about it, feel free to vote or star to get updates

thanks. Is there some sort of “alternate type declaration” plan for js backend ? An equivalent of the TypeScript declaration

foo: string | number

. Currently I struggle to express this sort of things with types. I duplicate method with different parameter’s type or Any when it generate too much duplication 😕

What Kotlin framework was it on geecon 2014 prague? https://vimeo.com/110781020 Was it

kwery

?

AFAIK we don’t have a plan about union types in the language //cc @abreslav

It’s hard for JS interop. Duplicating method with different parameters often ends with combinatorial explosion.

Any

and/or

dynamic

solve this by undermining type safety. And I don’t see another solution 😞

You’re right. We faced with it already, and we don't have good solution now.

Well at least JB’s people are aware of the issue, there is hope for a better solution in a future version 😉

can someone from Kotlin IJ plugin team help me with this bug: https://code.google.com/p/android/issues/detail?id=192524 Seems like the light classes we are generating are confusing kotlin pluing (code compiles and runs fine)

Also, I'm I'm about to take off, but will be available later tonight if you need any more info on that bug

@pavel.talanov: can you help @yigit here? https://kotlinlang.slack.com/archives/general/p1446588666004188

any one had the issue using Anko preview plugin ? I just saw blank after I press "refresh"