update version, site and docs
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@@ -29,8 +29,8 @@ fun HomePage() {
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listOf(
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"""
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// Everything is an expression
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val x = 10
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val status = if (x > 0) "Positive" else "Zero or Negative"
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val x: Int = 10
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val status: String = if (x > 0) "Positive" else "Zero or Negative"
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// Even loops return values!
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val result = for (i in 1..5) {
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@@ -40,8 +40,8 @@ fun HomePage() {
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println("Result: " + result)
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""".trimIndent(),
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"""
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// Functional power with ranges and collections
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val squares = (1..10)
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// Functional power with generics and collections
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val squares: List<Int> = (1..10)
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.filter { it % 2 == 0 }
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.map { it * it }
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@@ -49,20 +49,43 @@ fun HomePage() {
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// Output: [4, 16, 36, 64, 100]
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""".trimIndent(),
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"""
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// Generics and type aliases
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typealias Num = Int | Real
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class Box<out T: Num>(val value: T) {
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fun get(): T = value
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}
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val intBox = Box(42)
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val realBox = Box(3.14)
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println("Boxes: " + intBox.get() + ", " + realBox.get())
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""".trimIndent(),
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"""
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// Strict compile-time types and symbol resolution
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fun greet(name: String, count: Int) {
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for (i in 1..count) {
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println("Hello, " + name + "!")
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}
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}
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greet("Lyng", 3)
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// greet(10, "error") // This would be a compile-time error!
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""".trimIndent(),
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"""
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// Flexible map literals and shorthands
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val id = 101
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val name = "Lyng"
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val base = { id:, name: } // Shorthand for id: id, name: name
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val full = { ...base, version: "1.0", status: "active" }
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val full = { ...base, version: "1.5.0-SNAPSHOT", status: "active" }
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println(full)
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""".trimIndent(),
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"""
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// Modern null safety
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var config = null
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var config: Map<String, Int>? = null
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config ?= { timeout: 30 } // Assign only if null
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val timeout = config?.timeout ?: 60
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val timeout = config?["timeout"] ?: 60
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println("Timeout is: " + timeout)
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""".trimIndent(),
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"""
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@@ -76,10 +99,10 @@ fun HomePage() {
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"""
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// Diamond-safe Multiple Inheritance (C3 MRO)
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interface Logger {
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fun log(m) = println("[LOG] " + m)
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fun log(m: String) = println("[LOG] " + m)
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}
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interface Auth {
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fun login(u) = println("Login: " + u)
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fun login(u: String) = println("Login: " + u)
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}
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class App() : Logger, Auth {
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@@ -92,30 +115,30 @@ fun HomePage() {
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""".trimIndent(),
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"""
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// Extension functions and properties
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fun String.shout() = this.toUpperCase() + "!!!"
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fun String.shout(): String = this.uppercase() + "!!!"
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println("hello".shout())
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val List.second get = this[1]
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val List<T>.second: T get() = this[1]
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println([10, 20, 30].second)
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""".trimIndent(),
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"""
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// Non-local returns from closures
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fun findFirst(list, predicate) {
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fun findFirst<T>(list: Iterable<T>, predicate: (T)->Bool): T? {
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list.forEach {
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if (predicate(it)) return@findFirst it
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}
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null
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}
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val found = findFirst([1, 5, 8, 12]) { it > 10 }
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val found: Int? = findFirst([1, 5, 8, 12]) { it > 10 }
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println("Found: " + found)
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""".trimIndent(),
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"""
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// Easy operator overloading
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class Vector(val x, val y) {
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override fun plus(other) = Vector(x + other.x, y + other.y)
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override fun toString() = "Vector(%g, %g)"(x, y)
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class Vector(val x: Real, val y: Real) {
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override fun plus(other: Vector): Vector = Vector(x + other.x, y + other.y)
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override fun toString(): String = "Vector(%g, %g)"(x, y)
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}
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val v1 = Vector(1, 2)
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@@ -125,7 +148,7 @@ fun HomePage() {
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"""
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// Property delegation to Map
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class User() {
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var name by Map()
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var name: String by Map()
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}
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val u = User()
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@@ -165,17 +188,18 @@ fun HomePage() {
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Div({ classes("text-center") }) {
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H1({ classes("display-5", "fw-bold", "mb-3") }) { Text("Welcome to Lyng") }
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P({ classes("lead", "text-muted", "mb-4") }) {
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Text("A lightweight, expressive scripting language designed for clarity, composability, and fun. ")
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Text("A lightweight, expressive scripting language with strict static typing and functional power. ")
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Br()
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Text("Run it anywhere Kotlin runs — share logic across JS, JVM, and more.")
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}
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Div({ classes("d-flex", "justify-content-center", "gap-2", "flex-wrap", "mb-4") }) {
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// Benefits pills
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listOf(
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"Clean, familiar syntax",
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"Strict static typing",
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"Generics & Type Aliases",
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"Implicit coroutines",
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"both FP and OOP",
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"Batteries-included standard library",
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"Embeddable and testable"
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"Batteries-included standard library"
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).forEach { b ->
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Span({ classes("badge", "text-bg-secondary", "rounded-pill") }) { Text(b) }
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}
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@@ -233,7 +257,7 @@ fun HomePage() {
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// Short features list
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Div({ classes("row", "g-4", "mt-1") }) {
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listOf(
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Triple("Fast to learn", "Familiar constructs and readable patterns — be productive in minutes.", "lightning"),
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Triple("Safe and Robust", "Strict compile-time resolution, generics, and null safety catch errors early.", "shield-check"),
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Triple("Portable", "Runs wherever Kotlin runs: reuse logic across platforms.", "globe2"),
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Triple("Pragmatic", "A standard library that solves real problems without ceremony.", "gear-fill")
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).forEach { (title, text, icon) ->
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@@ -22,6 +22,7 @@ import net.sergeych.lyng.Script
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import net.sergeych.lyng.ScriptError
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import net.sergeych.lyng.highlight.TextRange
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import net.sergeych.lyng.miniast.CompletionItem
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import net.sergeych.lyng.requireScope
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import net.sergeych.lyng.tools.LyngDiagnostic
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import net.sergeych.lyng.tools.LyngDiagnosticSeverity
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import net.sergeych.lyng.tools.LyngSymbolInfo
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@@ -48,11 +49,18 @@ fun TryLyngPage(route: String) {
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var code by remember(initialCode) {
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mutableStateOf(
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initialCode ?: """
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// Welcome to Lyng! Edit and run.
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// Try changing the data and press Ctrl+Enter or click Run.
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val data = 1..5 // or [1, 2, 3, 4, 5]
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data.filter { it % 2 == 0 }.map { it * it }
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// Welcome to Lyng! Modern scripting with strict types and generics.
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typealias Numeric = Int | Real
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fun process<T: Numeric>(items: List<T>): List<T> {
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items.filter { it > 0 }.map { it * it }
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}
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val data: List<Int> = [-2, -1, 0, 1, 2]
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println("Processed: " + process(data))
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// Try changing data or adding Real numbers!
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""".trimIndent()
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)
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}
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@@ -94,13 +102,13 @@ fun TryLyngPage(route: String) {
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s.addVoidFn("print") {
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for ((i, a) in this.args.withIndex()) {
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if (i > 0) printed.append(' ')
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printed.append(a.toString(this).value)
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printed.append(a.toString(this.requireScope()).value)
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}
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}
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s.addVoidFn("println") {
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for ((i, a) in this.args.withIndex()) {
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if (i > 0) printed.append(' ')
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printed.append(a.toString(this).value)
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printed.append(a.toString(this.requireScope()).value)
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}
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printed.append('\n')
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}
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@@ -154,8 +162,8 @@ fun TryLyngPage(route: String) {
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fun resetCode() {
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code = initialCode ?: """
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// Welcome to Lyng! Edit and run.
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[1,2,3].map { it * 10 }
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// Welcome to Lyng! Modern scripting with strict types and generics.
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[1, 2, 3].map { it * 10 }
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""".trimIndent()
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output = null
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error = null
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