49 lines
1 KiB
Text
49 lines
1 KiB
Text
package examples.showcase
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import fmt
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import strings
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interface Greeter {
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fun greet(name: String): String
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}
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class PrefixGreeter(val prefix: String): Greeter {
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fun greet(name: String): String {
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return prefix + " " + name
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}
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}
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fun main() {
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val greeter: Greeter = PrefixGreeter("hello")
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println(greeter.greet("gotlin"))
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val names = listOf<String>("ada", "linus")
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val scores = mapOf<String, Int>("ada", 10, "linus", 8)
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println(names)
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println(scores)
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val upper = strings.ToUpper("gotlin")
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fmt.Println("interop:", upper)
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val maybe: String? = null
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if (maybe == null) {
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println("null check works")
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}
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runBlocking {
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val ready = Channel<String>()
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launch {
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delay(120)
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ready.send("timer fired")
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}
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select {
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ready -> println("channel says: " + it)
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}
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val answer = async<Int> {
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delay(50)
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return 42
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}
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fmt.Println("async value:", answer.await())
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}
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}
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