Hi everyone - sorry if i'm not posting in the righ...

# getting-started

[jamie-purchase]

Hi everyone - sorry if i'm not posting in the right place, i'm new here
Jamie, live in Galway, Ireland - been experimenting with Kotlin for a short while now
loved Java for years and still use it alot but loving the less-verbose and sexier Kotlin syntax

anyway, I have a question about casting a value from a java method to a HashMap and i've exhausted my google-fu 😕
calling getAttribute("something") on an instance of com.sun.net.httpserver.HttpHandler
and I need to cast it to HashMap<String, Any> but i'm unfamiliar with how to do that

[pavel]

https://kotlinlang.org/docs/reference/typecasts.html

[jamie-purchase]

ah it can check at runtime? cool. thanks

[pavel]

yep, more or less same as in Java

[jamie-purchase]

okay so val parameterMap = ex.getAttribute("parameters") as HashMap<String, Any> isn't giving me any grief in the IDE anyway 🙂

[pavel]

that would work in most cases, but will break down if the attribute is null or not there at all

[pavel]

as? is probably better

[jamie-purchase]

it's a little weird still, thinking I want to not use nulls but i'm going to have to while i'm using java classes I think

[jamie-purchase]

do you have a karma/gratitude convention on this slack btw?

[karelpeeters]

We usually react with 👍 here.

[jamie-purchase]

ah fair enough. only asking since the python and cfml slacks have a bot that lets you give awards to people and it keeps a score of who's most helpful and stuff.

[jamie-purchase]

thanks for the help @pavel

[karelpeeters]

Let's leave measuring "usefulness" on stackoverflow 🙂.