fortunately I’ve only got a couple more days max working on this project, then I can go back to Kotlin 🙂

It's dangerous. When I switch to Java I keep forgetting to do

.equals

and defensive null checks.

https://medium.com/@ajalt/benchmarking-kotlin-sequences-e06d8bb4011c is this blog still relevant? I just did some of my benchmarks and my results are quite different:

Benchmark                     Mode  Cnt    Score     Error  Units

Sequences.mapFilterList4      avgt   10  492.221 ± 105.769  ms/op

Sequences.mapFilterSequence4  avgt   10  172.434 ±  31.000  ms/op

Were there some huge optimisations during the year?

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.concurrent/thread.html Hmm

for some reason my jvm version in gradle seems to be wrong when I use java 8 which gives this error

util.kt: (12, 28): Unresolved reference: int

I'm building a backend service for my Coinverse Android app using a Kotlin .jar hosted on AppEngine to populate data. There is an issue migrating the Kotlin project from my old MacBook Pro (MBP), to the new MBP. The

Main

method is failing intermittently. Any thoughts are appreciated! This has been driving me crazy for months. 🤯 🙏 https://stackoverflow.com/questions/59525001/intellij-main-error-migrating-projects-exception-in-thread-timer-0

RecyclerView Adapter Template

‪┏━━┓┏━━┓┏━━┓┏━━┓‬ ‪┗━┓┃┃┏┓┃┗━┓┃┃┏┓┃‬ ‪┏━┛┃┃┃┃┃┏━┛┃┃┃┃┃‬ ‪ HAPPY NEW YEAR 11111100100‬ ‪┃┏━┛┃┃┃┃┃┏━┛┃┃┃┃‬ ‪┃┗━┓┃┗┛┃┃┗━┓┃┗┛┃‬ ‪┗━━┛┗━━┛┗━━┛┗━━┛‬

hi 2 all! Happy new year! Please tell me, what the Virtual machine software are you use on mac book?

why you need virtual machine software?

but anyhow you can try Vine

do you have to flush the write channel?

hello, anyone work on Corda before?

HTTP Decommission Reminder I just want to offer a friendly reminder to everyone that on January 15th, 2020, many of the most popular artifact servers in the JVM ecosystem will be formally dropping support for

HTTP

and will only support

HTTPS

for downloading/uploading artifacts. I highly recommend that you check both your build logic, as well as your corporate artifact server mirror configurations (ie. JFrog Artifactory & Sonatype Nexus) to ensure that this breaking change won't impact your organization. These are the servers committed to this change: • Sonatype Maven Central • JFrog JCenter • Pivotal Spring • Gradle Plugin Portal You can read more about all of the announcements here: https://gist.github.com/JLLeitschuh/789e49e3d34092a005031a0a1880af99

any idea what could cause it? here's the file with exception https://fossies.org/linux/kotlin/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/AddContinuationLowering.kt one of the overriden functions has invalid number of parameters, right?

Hello everyone, how do I convert

KStream<String, Long>[] branches = stream.branch(
    (key, value) -> key.startsWith("A"), /* first predicate  */
    (key, value) -> key.startsWith("B"), /* second predicate */
    (key, value) -> true                 /* third predicate  */
  );

to kotlin? I've tried with

val branchedStream = metricStream.branch(
                { k: String, v: MetricWithTimestamp -> v.getType().equals("diagnostic") },
                { k: String, v: MetricWithTimestamp -> true }
        )

but I'm getting

Error:(91, 17) Kotlin: Type mismatch: inferred type is (???, ???) -> [ERROR : <ERROR FUNCTION RETURN TYPE>] but Predicate<in String!, in MetricWithTimestamp!>! was expected

even trying with typed arguments I get:

Error:(91, 17) Kotlin: Type mismatch: inferred type is (String, MetricWithTimestamp) -> Boolean but Predicate<in String!, in MetricWithTimestamp!>! was expected

any idea?

oh nvm https://stackoverflow.com/a/48930702/690839 this helped 🙂

❓ Is there ever likely to be an all-Kotlin equivalent to the Java Fernflower Decompiler used in IntelliJ? Currently we cannot decompile Kotlin dependencies in the same useful way as we can with Java, which is sometimes restricting when debugging production Apps.

How can I access

this

if I'm inside a function that has a receiver?

whats the difference between this

fun someFunc1(b: Balance): () -> Either<String, Int>

and this

fun someFunc1(b: Balance): Either<String, Int>.

https://twitter.com/kotlin/status/1214879430872457218 To write typesafe HTML directly inside your Kotlin code, use the kotlinx.html library. This is especially useful when building apps for the browser using Kotlin/JS! #KotlinTips https://t.co/1WRMJBsnIG Twitter

The obvious solution is 1. Parse the full JSON into

JsonObject

2. Traverse this

JsonObject

to extract my nested object 3. Parse the nested object using

Gson().fromJson(nestedJson, MyType::class.java)

But this is inefficient, as I'll be parsing the full object twice. Any ideas how can I prevent this? I thought maybe make that in 1. only the first level of the JSON is parsed (i.e. only the "wrapper"), but not sure if this is a good approach and how to do it

I really need some help... anyone here experinced with some .NET?

fun Person.email(): Email? {
    contract {
        returnsNotNull() implies (<mailto:this@email.email|this@email.email> is String )
    }
    return this.email?.let {
        Email(it)
    }
}

contract says:

Error in contract description: only references to parameters are allowed in contract description

. which i suppose makes sense, i’m trying to prove something about an internal value of a instance not directly related to the params/return?

is there a way to have both lazy and observable delegate on single property, i.e. first time access should inititate the property and then observable delegate rules?

is there something like

retry

but where I can use an exit/break condition?

I can implement it myself of course

What does happen if my project depends on kotlin-jdk8 and some library depedns on jdk7?