Created
April 30, 2025 10:39
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Kotlin DSL Example
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| class HTML { | |
| private var head: Head? = null | |
| private var body: Body? = null | |
| fun head(init: Head.() -> Unit): Head { | |
| val head = Head() | |
| head.init() | |
| this.head = head | |
| return head | |
| } | |
| fun body(init: Body.() -> Unit): Body { | |
| val body = Body() | |
| body.init() | |
| this.body = body | |
| return body | |
| } | |
| override fun toString(): String { | |
| return "<html>${head ?: ""}${body ?: ""}</html>" | |
| } | |
| } | |
| class Head { | |
| var title: String = "" | |
| fun title(text: String) { | |
| this.title = "<title>$text</title>" | |
| } | |
| override fun toString(): String { | |
| return "<head>$title</head>" | |
| } | |
| } | |
| class Body { | |
| var content: String = "" | |
| fun p(text: String) { | |
| content += "<p>$text</p>" | |
| } | |
| override fun toString(): String { | |
| return "<body>$content</body>" | |
| } | |
| } | |
| fun html(init: HTML.() -> Unit): HTML { | |
| val html = HTML() | |
| html.init() | |
| return html | |
| } | |
| fun main() { | |
| val myHtml = html { | |
| head { | |
| title("My Webpage") | |
| } | |
| body { | |
| p("Hello, world!") | |
| p("This is a Kotlin DSL example.") | |
| } | |
| } | |
| println(myHtml) | |
| } |
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