--- title: Type Casting and Smart Cast in Kotlin: A Complete Guide... description: A beginner-friendly guide to type casting in Kotlin covering the `is` operator, smart casts, unsafe casting with `as`, and safe casting with `as?`. Explains... canonical: https://daily.dev/posts/type-casting-and-smart-cast-in-kotlin-a-complete-guide-for-beginners-jbcuwvew8 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Type Casting and Smart Cast in Kotlin: A Complete Guide for Beginners | daily.dev og:description: A beginner-friendly guide to type casting in Kotlin covering the `is` operator, smart casts, unsafe casting with `as`, and safe casting with `as?`. Explains... og:url: https://daily.dev/posts/type-casting-and-smart-cast-in-kotlin-a-complete-guide-for-beginners-jbcuwvew8 og:image: https://api.daily.dev/og/posts/jbCUwVeW8.png og:image:alt: Type Casting and Smart Cast in Kotlin: A Complete Guide for Beginners og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Type Casting and Smart Cast in Kotlin: A Complete Guide for Beginners **[Medium](https://daily.dev/sources/medium_js)** · 6 min read · 0 upvotes · 0 comments ## Summary A beginner-friendly guide to type casting in Kotlin covering the `is` operator, smart casts, unsafe casting with `as`, and safe casting with `as?`. Explains how Kotlin's smart cast feature automatically converts objects to the correct type after a type check, reducing boilerplate compared to Java. Includes practical Android examples such as RecyclerView with multiple view types and API response handling with sealed classes, plus best practices and a practice exercise. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Variables, Constants, and Data Types in Kotlin: A Beginner-Friendly Guide](https://daily.dev/posts/variables-constants-and-data-types-in-kotlin-a-beginner-friendly-guide-rkyab6sww) · Medium · 0 upvotes · 0 comments - [Learn Modern Kotlin](https://daily.dev/posts/learn-modern-kotlin-emjhfvz0q) · freeCodeCamp · 1 upvotes · 0 comments - [Evaluating Kotlin in Real Projects](https://daily.dev/posts/evaluating-kotlin-in-real-projects-4hvtaptzn) · JetBrains · 4 upvotes · 0 comments --- Tags: [#android](https://daily.dev/tags/android), [#kotlin](https://daily.dev/tags/kotlin) [View this post on daily.dev](https://daily.dev/posts/type-casting-and-smart-cast-in-kotlin-a-complete-guide-for-beginners-jbcuwvew8) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Type Casting and Smart Cast in Kotlin: A Complete Guide for Beginners","url":"https://daily.dev/posts/type-casting-and-smart-cast-in-kotlin-a-complete-guide-for-beginners-jbcuwvew8","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/type-casting-and-smart-cast-in-kotlin-a-complete-guide-for-beginners-jbcuwvew8"},"datePublished":"2026-07-22T17:37:57.997Z","dateModified":"2026-07-22T17:38:48.979Z","description":"A beginner-friendly guide to type casting in Kotlin covering the `is` operator, smart casts, unsafe casting with `as`, and safe casting with `as?`. 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