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#getting-started
  • f

    fred.deschenes

    10/18/2017, 7:16 PM
    I don't think that's possible @joscha.alisch
  • f

    fred.deschenes

    10/18/2017, 7:16 PM
    you could just make the extension function private if you had the source for 
    A
    though
  • j

    joscha.alisch

    10/18/2017, 7:45 PM
    Ok, i was almost expecting this 😞 Thanks nonetheless @fred.deschenes
  • f

    fstn

    10/19/2017, 5:08 AM
    Hi, Is there a better way to write that:
    Copy code
    return if(registeredNodes[flowName]!= null)  registeredNodes[flowName]!![nodeId]
?: throw UnableToFindRegisterNodeException(flowName,nodeId) 
else throw UnableToFindRegisterNodeException(flowName,nodeId)
    😇 with
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    val registeredNodes = mutableMapOf<String,MutableMap<String,Node>>()
  • k

    karelpeeters

    10/19/2017, 5:31 AM
    Safe calls and elvis operator: 
    nodes[flowName]?.get(nodeId) ?: throw ...
  • f

    fstn

    10/19/2017, 5:33 AM
    thanks the tip is to use get instead of [
  • j

    Jack

    10/19/2017, 11:57 AM
    Hi I am just getting started with gradle and kotlin, I am trying to set up a ktor server with tests
  • j

    Jack

    10/19/2017, 11:57 AM
    I am unsure how to do this ‘Add ktor-test-host dependency to test scope’
  • j

    Jack

    10/19/2017, 11:57 AM
    can anybody advise?
  • k

    karelpeeters

    10/19/2017, 11:59 AM
    #ktor
  • j

    Jack

    10/19/2017, 12:00 PM
    never mind I have solved the issue
  • f

    fstn

    10/19/2017, 3:55 PM
    I have a serialization issue with this class
    Copy code
    @JsonIgnoreProperties(ignoreUnknown = true)
@JsonInclude(JsonInclude.Include.NON_NULL)
data class FacebookRequest(
        @JsonProperty("recipient") val recipient: RequestRecipient,
        @JsonProperty("message") val message: RequestMessage? = null,
        @JsonProperty("notification_type") val notificationType: NotificationType?,
        @JsonProperty("sender_action") val senderAction: SenderAction? = null
)
    I try to serialize it with:
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    (Json.encode(facebookRequest).toJsonAsBytes()
    And I got :
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    io.vertx.core.json.EncodeException: Failed to encode as JSON: No serializer found for class java.lang.Object and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: com.github.parkee.messenger.model.request.FacebookRequest["message"]->com.github.parkee.messenger.model.request.RequestMessage["quickReplies"]->java.util.ArrayList[0]->com.github.parkee.messenger.model.request.quickreply.QuickReply["payload"])
	at io.vertx.core.json.Json.encode(Json.java:65)
    Any ideas? I tried that:
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    Json.mapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY)
    I also try that:
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    val mapper = ObjectMapper().registerModule(KotlinModule())
  • f

    fred.deschenes

    10/19/2017, 5:11 PM
    I've never used vert.x, but make sure you call 
    registerModule(KotlinModule())
    on the actual mapper used by vert.x
  • f

    fstn

    10/19/2017, 7:04 PM
    ok I done that :
    Copy code
    val mapper = ObjectMapper().registerModule(KotlinModule())
        mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
    it works but I’m not sure that is the good way to do
  • l

    lex

    10/20/2017, 3:10 AM
    ObjectMapper().findAndRegisterModules()
  • l

    lex

    10/20/2017, 3:10 AM
    without arguments
  • f

    fstn

    10/20/2017, 4:58 AM
    thanks 😉
  • m

    mamba

    10/21/2017, 9:26 PM
    Hey , guys I am new here and to Android development as well. Just got the Android Studio 3.0 setup on my system for the first time. I am a JavaScript Developer, and have not written a single line of Java code ever. Am in the right place to start?I need some getting-started heads up.
  • k

    karelpeeters

    10/21/2017, 9:29 PM
    #android, but maybe start with something like this: https://developer.android.com/training/index.html
  • m

    mamba

    10/21/2017, 9:38 PM
    @karelpeeters Do I need to know Java at all(During any Development Phase)
  • k

    karelpeeters

    10/21/2017, 9:39 PM
    You'll need to know a bit of Java to understand some of the code samples, yes. If you already know Kotlin you should be fine for the most part I think.
  • m

    mamba

    10/21/2017, 9:39 PM
    Alright. Thanks.
  • a

    amatos

    10/21/2017, 11:36 PM
    hola! I’m having an error. IntelliJ says “unresolved reference” when trying to call “mutableSetOf()”
  • a

    amatos

    10/21/2017, 11:37 PM
  • a

    amatos

    10/21/2017, 11:40 PM
  • k

    karelpeeters

    10/21/2017, 11:46 PM
    Does it work when you actually build your code?
  • k

    karelpeeters

    10/21/2017, 11:47 PM
    Are you using a build tool like gradle?
  • a

    amatos

    10/21/2017, 11:52 PM
    it looks like it was a version missmatch 🙄
  • a

    amatos

    10/21/2017, 11:54 PM
    but now I have an issue, it complains that there is no default constructor 🤔
  • a

    amatos

    10/21/2017, 11:55 PM
    this is my class, that’s the default constructor, right?
    Employee_constructor.kt
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