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# community-supports
Slackbot
07/28/2022, 10:38 PMThis message was deleted.
t
tony
07/28/2022, 10:40 PMalways use
Actiontony
07/28/2022, 10:40 PMif you use Kotlin DSL, Gradle will convert it to lambda-with-receiver at runtime, so it's identical to using a lambda anyway
this is in your public API. Internally, use whatever you want
e
Eli Graber
07/28/2022, 10:42 PMOK thanks, I though that was the case, but I see that Gradle uses lambdas in
org.gradle.kotlin.dslEli Graber
07/28/2022, 10:43 PMIs it OK to use default params in the public API, e.g.
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public fun Foo(action: Action<Bar> = Actions.doNothing())t
tony
07/28/2022, 10:43 PMI'm not sure Groovy DSL would understand that. Maybe with
@JvmOverloads👍 1
e
Eli Graber
07/28/2022, 10:44 PMIn either case, that would only be an issue if I tried to use that API from a Groovy script, right?
t
tony
07/28/2022, 10:46 PMpresumably
e
Eli Graber
07/28/2022, 10:46 PMOK thanks!
g
grossws
07/28/2022, 11:11 PMIIRC Gradle works with actions just fine from groovy dsl
j
John
07/29/2022, 1:11 AMYeah gradle ships some nice interop glue. I have used this to be able to expose groovy closures as typed lambdas in kotlin outside of the gradle context:
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fun <T> Any.closureOf(action: T.() -> Unit): Closure<Any?> =
KotlinClosure1(action, this, this)
/**
* Adapts an unary Kotlin function to an unary Groovy [Closure].
*
* @param T the type of the single argument to the closure.
* @param V the return type.
* @param function the function to be adapted.
* @param owner optional owner of the Closure.
* @param thisObject optional _this Object_ of the Closure.
*
* @see [Closure]
*/
class KotlinClosure1<in T : Any?, V : Any>(
val function: T.() -> V,
owner: Any? = null,
thisObject: Any? = null
) : Closure<V?>(owner, thisObject) {
@Suppress("unused") // to be called dynamically by Groovy
fun doCall(it: T): V = it.function()
}5 Views