{"id":2022,"date":"2026-07-28T06:23:35","date_gmt":"2026-07-28T06:23:35","guid":{"rendered":"https:\/\/www.vpascode.com\/ru\/docs\/uncategorized\/kotlin-visualizer-guide\/"},"modified":"2026-07-28T06:23:35","modified_gmt":"2026-07-28T06:23:35","slug":"kotlin-visualizer-guide","status":"publish","type":"ld_docs","link":"https:\/\/www.vpascode.com\/ru\/docs\/vpascode-docs\/kotlin-visualizer-guide\/","title":{"rendered":"Kotlin"},"content":{"rendered":"<p>\u041f\u0440\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0434\u043b\u044f Android, \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 \u0441\u043b\u0443\u0436\u0431 Ktor \u0438\u043b\u0438 \u043c\u043d\u043e\u0433\u043e\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432 \u043d\u0430 Kotlin \u043d\u0430\u0432\u0438\u0433\u0430\u0446\u0438\u044f \u043f\u043e \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u044f\u043c \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432, \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u0430\u043c \u043a\u043b\u0430\u0441\u0441\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430\u043c \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044f \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043c\u043e\u0436\u0435\u0442 \u0437\u0430\u0442\u0440\u0443\u0434\u043d\u0438\u0442\u044c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0431\u0449\u0435\u0439 \u043a\u0430\u0440\u0442\u0438\u043d\u044b. <strong>Kotlin Visualizer<\/strong> \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u0443\u0435\u0442 \u043a\u043b\u0430\u0441\u0441\u044b Kotlin, \u043a\u043b\u0430\u0441\u0441\u044b \u0434\u0430\u043d\u043d\u044b\u0445, \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0435 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b, \u0441\u0438\u043d\u0433\u043b\u0442\u043e\u043d\u044b (<code>object<\/code>), \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0430\u0442\u0442\u0435\u0440\u043d\u044b \u0434\u0435\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u0447\u0435\u0442\u043a\u0438\u0435, \u0438\u043d\u0442\u0435\u0440\u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0435 \u0434\u0438\u0430\u0433\u0440\u0430\u043c\u043c\u044b \u043a\u043b\u0430\u0441\u0441\u043e\u0432. \u041f\u0440\u0438 \u0430\u043d\u0430\u043b\u0438\u0437\u0435 \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0439\u0441\u0442\u0432 (<code>val<\/code>, <code>var<\/code>), \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432 \u0438 \u043c\u043e\u0434\u0435\u043b\u0435\u0439 \u043d\u0430\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Kotlin \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u043e\u0440\u044b \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043c\u043e\u0433\u0443\u0442 \u0432\u0438\u0437\u0443\u0430\u043b\u044c\u043d\u043e \u0438\u0437\u0443\u0447\u0430\u0442\u044c \u043c\u043e\u0434\u0435\u043b\u0438 \u0434\u043e\u043c\u0435\u043d\u0430 \u0438 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043e\u0434\u043d\u0438\u043c \u0432\u0437\u0433\u043b\u044f\u0434\u043e\u043c.<\/p>\n<h2>\u041c\u0435\u0445\u0430\u043d\u0438\u043a\u0430 \u0432\u0438\u0437\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 Kotlin<\/h2>\n<p>\u0412 VPasCode \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0432\u0438\u0437\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f Kotlin \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u0442 <code>class<\/code>, <code>data class<\/code>, <code>sealed interface<\/code>, <code>sealed class<\/code>, \u0430 \u0442\u0430\u043a\u0436\u0435 <code>object<\/code> \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u0438\u044f \u0432 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043a\u0430\u0440\u0442\u043e\u0447\u043a\u0438 \u043a\u043b\u0430\u0441\u0441\u043e\u0432 \u0432 \u0441\u0442\u0438\u043b\u0435 UML. \u041a\u043b\u0430\u0441\u0441\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b \u0441\u043b\u0443\u0436\u0430\u0442 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u043c\u0438 \u0432\u0438\u0437\u0443\u0430\u043b\u044c\u043d\u044b\u043c\u0438 \u0443\u0437\u043b\u0430\u043c\u0438, \u0441\u043f\u0438\u0441\u043e\u043a \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440\u0430 \u2014 \u043a\u0430\u043a \u043f\u043e\u043b\u044f \u0441 \u0442\u0438\u043f\u0430\u043c\u0438, \u0430 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0441\u043b\u043e\u0432\u0430 \u043d\u0430\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u043b\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u0441\u043e\u0437\u0434\u0430\u044e\u0442 \u043f\u0440\u044f\u043c\u044b\u0435 \u0441\u0432\u044f\u0437\u0443\u044e\u0449\u0438\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u044b \u043c\u0435\u0436\u0434\u0443 \u0432\u0438\u0437\u0443\u0430\u043b\u044c\u043d\u044b\u043c\u0438 \u0441\u0443\u0449\u043d\u043e\u0441\u0442\u044f\u043c\u0438.<\/p>\n<h3>1. \u041e\u0441\u043d\u043e\u0432\u043d\u0430\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430<\/h3>\n<p>\u0414\u043b\u044f \u0432\u0438\u0437\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b Kotlin \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0435 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b \u0434\u043b\u044f \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0445 \u0442\u0438\u043f\u043e\u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u0432 \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u0430\u0431\u0441\u0442\u0440\u0430\u043a\u0442\u043d\u044b\u043c\u0438 \u0431\u0430\u0437\u043e\u0432\u044b\u043c\u0438 \u043a\u043b\u0430\u0441\u0441\u0430\u043c\u0438 \u0438 \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u044b\u043c\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438. \u041c\u043e\u0434\u0443\u043b\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u043b\u0430\u0442\u0435\u0436\u0435\u0439 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u0443\u044e\u0442 \u0447\u0438\u0441\u0442\u044b\u0439 \u043f\u043e\u043b\u0438\u043c\u043e\u0440\u0444\u043d\u044b\u0439 \u0434\u0438\u0437\u0430\u0439\u043d \u0432 Kotlin:<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Kotlin<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u0420\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c Kotlin \u0432 VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Kotlin<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Kotlin in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-kotlin\"><code class=\"language-kotlin\" data-language=\"kotlin\" class=\"language-kotlin\">package com.example.payment\r\n\r\nimport java.math.BigDecimal\r\n\r\n\/\/ \u0418\u0435\u0440\u0430\u0440\u0445\u0438\u044f \u0442\u0438\u043f\u043e\u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u0432 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0437\u0430\u043a\u0440\u044b\u0442\u043e\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430\r\nsealed interface PaymentResult {\r\n    data class Success(val transactionId: String, val amount: BigDecimal) : PaymentResult\r\n    data class Failure(val errorCode: String, val message: String) : PaymentResult\r\n}\r\n\r\n\/\/ \u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u0434\u043b\u044f \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043f\u043b\u0430\u0442\u0435\u0436\u0435\u0439\r\ninterface PaymentGateway {\r\n    val providerName: String\r\n    suspend fun processPayment(amount: BigDecimal, currency: String): PaymentResult\r\n}\r\n\r\n\/\/ \u0410\u0431\u0441\u0442\u0440\u0430\u043a\u0442\u043d\u044b\u0439 \u0431\u0430\u0437\u043e\u0432\u044b\u0439 \u043f\u0440\u043e\u0432\u0430\u0439\u0434\u0435\u0440\r\nabstract class BaseGateway(override val providerName: String) : PaymentGateway {\r\n    protected fun logTransaction(amount: BigDecimal) {\r\n        println(\"[$providerName] \u041e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438 \u043d\u0430 \u0441\u0443\u043c\u043c\u0443 $amount\")\r\n    }\r\n}\r\n\r\n\/\/ \u041a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u0430\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f Stripe\r\nclass StripeGateway(\r\n    val apiKey: String,\r\n    val merchantId: String\r\n) : BaseGateway(\"Stripe\") {\r\n\r\n    override suspend fun processPayment(amount: BigDecimal, currency: String): PaymentResult {\r\n        logTransaction(amount)\r\n        return PaymentResult.Success(\r\n            transactionId = \"tx_stripe_${System.currentTimeMillis()}\",\r\n            amount = amount\r\n        )\r\n    }\r\n}<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Kotlin in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u0420\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c Kotlin \u0432 VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"uTbvbBb\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone wp-image-1537 size-full\" decoding=\"async\" fetchpriority=\"high\" height=\"1205\" sizes=\"(max-width: 1954px) 100vw, 1954px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a6856f55fd10-e1785223652940.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a6856f55fd10-e1785223652940.png 1954w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a6856f55fd10-e1785223652940-300x185.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a6856f55fd10-e1785223652940-1024x631.png 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a6856f55fd10-e1785223652940-768x474.png 768w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a6856f55fd10-e1785223652940-1536x947.png 1536w\" width=\"1954\"\/><\/p>\n<p>\u00a0<\/p>\n<h2>\u0420\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u044b\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u043d\u044b\u0435 \u0442\u0435\u0445\u043d\u0438\u043a\u0438<\/h2>\n<p>\u0412\u0438\u0437\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f Kotlin \u043e\u0442\u043b\u0438\u0447\u043d\u043e \u0441\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0435\u043c \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0445 \u0441\u0443\u0449\u043d\u043e\u0441\u0442\u0435\u0439 \u0434\u043e\u043c\u0435\u043d\u0430, \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439 \u0434\u043e\u043c\u0435\u043d\u0430 \u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u043f\u043e\u0442\u043e\u043a\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445.<\/p>\n<h3>1. \u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0437\u0430\u043a\u0430\u0437\u043e\u0432 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u043e\u0439 \u043a\u043e\u043c\u043c\u0435\u0440\u0446\u0438\u0438<\/h3>\n<p>\u041e\u0431\u044a\u0435\u0434\u0438\u043d\u044f\u044f \u043e\u0431\u044a\u0435\u043a\u0442\u044b \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439 \u0438 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u044b \u0431\u0438\u0437\u043d\u0435\u0441-\u043b\u043e\u0433\u0438\u043a\u0438, VPasCode \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u0443\u0435\u0442 \u0434\u043e\u043c\u0435\u043d\u043d\u044b\u0435 \u043c\u043e\u0434\u0435\u043b\u0438 Kotlin \u0432 \u0447\u0435\u0442\u043a\u0438\u0435, \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u0441\u0435\u0442\u0438 \u0434\u0438\u0430\u0433\u0440\u0430\u043c\u043c:<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Kotlin<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u0420\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c Kotlin \u0432 VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Kotlin<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Kotlin in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-kotlin\"><code class=\"language-kotlin\" data-language=\"kotlin\" class=\"language-kotlin\">package com.example.order\r\n\r\nimport java.math.BigDecimal\r\n\r\nenum class OrderStatus {\r\n    PENDING, PROCESSING, SHIPPED, DELIVERED, CANCELLED\r\n}\r\n\r\ndata class LineItem(\r\n    val sku: String,\r\n    val price: BigDecimal,\r\n    val quantity: Int\r\n) {\r\n    val total: BigDecimal get() = price.multiply(BigDecimal(quantity))\r\n}\r\n\r\ndata class Customer(\r\n    val id: String,\r\n    val email: String,\r\n    val isVip: Boolean = false\r\n)\r\n\r\nclass Order(\r\n    val orderId: String,\r\n    val customer: Customer,\r\n    val items: List\r\n) {\r\n    var status: OrderStatus = OrderStatus.PENDING\r\n        private set\r\n\r\n    val grandTotal: BigDecimal\r\n        get() = items.fold(BigDecimal.ZERO) { acc, item -&gt; acc.add(item.total) }\r\n\r\n    fun markAsProcessing() {\r\n        check(status == OrderStatus.PENDING) { \"\u0417\u0430\u043a\u0430\u0437 \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c \u0432 \u043e\u0436\u0438\u0434\u0430\u043d\u0438\u0438 \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438\" }\r\n        status = OrderStatus.PROCESSING\r\n    }\r\n}<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Kotlin in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u0420\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c Kotlin \u0432 VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"arOoHFw\"><img alt=\"\" class=\"alignnone wp-image-1538 size-full\" decoding=\"async\" height=\"1100\" sizes=\"(max-width: 1954px) 100vw, 1954px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685706ae1a9-e1785223668884.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685706ae1a9-e1785223668884.png 1954w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685706ae1a9-e1785223668884-300x169.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685706ae1a9-e1785223668884-1024x576.png 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685706ae1a9-e1785223668884-768x432.png 768w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685706ae1a9-e1785223668884-1536x865.png 1536w\" width=\"1954\"\/><\/p>\n<p>\u00a0<\/p>\n<h2>\u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043c\u043e\u0434\u0443\u043b\u0435\u0439 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438<\/h2>\n<p>\u0412\u0438\u0437\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u043f\u043e\u0442\u043e\u043a\u043e\u0432 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438, \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432 \u0442\u043e\u043a\u0435\u043d\u043e\u0432 \u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u043f\u043e\u043c\u043e\u0433\u0430\u0435\u0442 \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u0430\u043c backend \u0438 Android \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c \u0441\u043b\u043e\u0438 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0432 \u043f\u043e\u0440\u044f\u0434\u043a\u0435.<\/p>\n<h3>1. \u041c\u043e\u0434\u0443\u043b\u044c \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0439<\/h3>\n<p>\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u0443\u0439\u0442\u0435 \u0443\u0447\u0435\u0442\u043d\u044b\u0435 \u0434\u0430\u043d\u043d\u044b\u0435, \u043a\u043e\u043d\u0442\u0440\u0430\u043a\u0442\u044b \u0442\u043e\u043a\u0435\u043d\u043e\u0432 \u0438 \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440\u044b \u0441\u0435\u0441\u0441\u0438\u0439 \u0434\u043b\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0433\u0440\u0430\u043d\u0438\u0446 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438:<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Kotlin<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u0420\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c Kotlin \u0432 VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Kotlin<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Kotlin in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-kotlin\"><code class=\"language-kotlin\" data-language=\"kotlin\" class=\"language-kotlin\">package com.example.auth\r\n\r\nenum class UserRole {\r\n    GUEST, MEMBER, ADMIN\r\n}\r\n\r\ndata class UserSession(\r\n    val userId: String,\r\n    val email: String,\r\n    val role: UserRole,\r\n    val authToken: String\r\n) {\r\n    val isAdmin: Boolean get() = role == UserRole.ADMIN\r\n}\r\n\r\ninterface TokenProvider {\r\n    fun generateToken(userId: String): String\r\n    fun validateToken(token: String): Boolean\r\n}\r\n\r\nobject JwtTokenProvider : TokenProvider {\r\n    override fun generateToken(userId: String): String = \"jwt_token_for_$userId\"\r\n    override fun validateToken(token: String): Boolean = token.startsWith(\"jwt_token_\")\r\n}\r\n\r\nclass AuthService(\r\n    private val tokenProvider: TokenProvider\r\n) {\r\n    fun authenticate(user: UserSession, requiredRole: UserRole): Boolean {\r\n        if (!tokenProvider.validateToken(user.authToken)) return false\r\n        if (user.isAdmin) return true\r\n        return user.role == requiredRole\r\n    }\r\n}<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Kotlin in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#kotlin: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\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u0420\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c Kotlin \u0432 VPasCode<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"diLPBmS\"><img alt=\"\" class=\"alignnone wp-image-1539 size-full\" decoding=\"async\" height=\"1124\" sizes=\"(max-width: 1954px) 100vw, 1954px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685713d34e8-e1785223682613.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685713d34e8-e1785223682613.png 1954w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685713d34e8-e1785223682613-300x173.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685713d34e8-e1785223682613-1024x589.png 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685713d34e8-e1785223682613-768x442.png 768w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a685713d34e8-e1785223682613-1536x884.png 1536w\" width=\"1954\"\/><\/p>\n<p>\u00a0<\/p>\n<h2>\u0421\u0442\u0440\u0430\u0442\u0435\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u043b\u0443\u0447\u0448\u0438\u0435 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0438<\/h2>\n<ul>\n<li><strong>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u043a\u043b\u0430\u0441\u0441\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439:<\/strong> \u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u043b\u0435\u0433\u043a\u043e\u0432\u0435\u0441\u043d\u044b\u0435 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u044b \u0434\u0430\u043d\u043d\u044b\u0445 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e <code>data class<\/code> \u0447\u0442\u043e\u0431\u044b \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u043e\u0440\u0430 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u043b\u0438\u0441\u044c \u0430\u043a\u043a\u0443\u0440\u0430\u0442\u043d\u043e \u0432 \u0432\u0438\u0434\u0435 \u044f\u0432\u043d\u044b\u0445 \u043f\u043e\u043b\u0435\u0439.<\/li>\n<li><strong>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0435 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b \u0434\u043b\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439:<\/strong> \u041c\u043e\u0434\u0435\u043b\u0438\u0440\u0443\u0439\u0442\u0435 \u0438\u0441\u0447\u0435\u0440\u043f\u044b\u0432\u0430\u044e\u0449\u0438\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u0432 \u0438 \u0432\u0430\u0440\u0438\u0430\u0446\u0438\u0438 \u0434\u043e\u043c\u0435\u043d\u0430 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e <code>sealed interface<\/code> \u0447\u0442\u043e\u0431\u044b \u0447\u0438\u0441\u0442\u043e \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u043e\u0434\u0442\u0438\u043f\u044b \u043d\u0430 \u0434\u0438\u0430\u0433\u0440\u0430\u043c\u043c\u0430\u0445.<\/li>\n<li><strong> \u0412\u044b\u0434\u0435\u043b\u044f\u0439\u0442\u0435 \u043e\u0434\u0438\u043d\u043e\u0447\u043a\u0438 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e <code>object<\/code>:<\/strong> \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e <code>object<\/code> \u0434\u043b\u044f \u0431\u0435\u0437\u0441\u043e\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0443\u0442\u0438\u043b\u0438\u0442 \u0438\u043b\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439 \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u0432, \u0447\u0442\u043e\u0431\u044b \u0447\u0435\u0442\u043a\u043e \u043e\u0442\u043b\u0438\u0447\u0430\u0442\u044c \u043e\u0434\u0438\u043d\u043e\u0447\u043a\u0438 \u043e\u0442 \u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0445 \u043a\u043b\u0430\u0441\u0441\u043e\u0432.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u041f\u0440\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0434\u043b\u044f Android, \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u0445 \u0441\u043b\u0443\u0436\u0431 Ktor \u0438\u043b\u0438 \u043c\u043d\u043e\u0433\u043e\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432 \u043d\u0430 Kotlin \u043d\u0430\u0432\u0438\u0433\u0430\u0446\u0438\u044f \u043f\u043e \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u044f\u043c \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432, \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u0430\u043c \u043a\u043b\u0430\u0441\u0441\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430\u043c \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044f \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043c\u043e\u0436\u0435\u0442 \u0437\u0430\u0442\u0440\u0443\u0434\u043d\u0438\u0442\u044c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0431\u0449\u0435\u0439 \u043a\u0430\u0440\u0442\u0438\u043d\u044b. Kotlin Visualizer \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u0443\u0435\u0442 \u043a\u043b\u0430\u0441\u0441\u044b Kotlin, \u043a\u043b\u0430\u0441\u0441\u044b \u0434\u0430\u043d\u043d\u044b\u0445, \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0435 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b, \u0441\u0438\u043d\u0433\u043b\u0442\u043e\u043d\u044b&#8230;<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":12,"template":"","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"ld_collection":[14],"class_list":["post-2022","ld_docs","type-ld_docs","status-publish","hentry","ld_collection-vpascode-docs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kotlin to Diagram Guide | Text to Diagram with VPasCode<\/title>\n<meta name=\"description\" content=\"Transform Kotlin code into clean visual diagrams automatically. 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