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| Name | Supercharge your Kotlin with Java Dynamic Proxies |
| Video Uploader | Video From Refactoring to Kotlin |
| Upload Date | This Video Uploaded At 05-07-2024 10:51:17 |
| Video Discription | We left the last episode (https://youtu.be/PdH-1UGAqBk) with the realisation that we can’t automagically delegate from an interface of suspend functions to an interface of non-suspend functions. That seems like quite an arcane problem, but the solution is generally very useful. It turns that we can implement interfaces at runtime, running dynamic code to respond to method calls. This can save us from writing lots of boilerplate code, and is used in dependency injection, object relational mapping and mocking. Unfortunately this technique is only applicable on the JVM, so if you are a Kotlin purist you may wish to look away now. For the rest of us, let’s have fun with dynamic proxies In this episode * 00:00:42 A tale of two interfaces * 00:02:34 Implementing only one method in an interface with an object * 00:03:31 Implementing an interface with a dynamic proxy * 00:07:16 Dynamic proxies and Kotlin delegation are a match made in heaven * 00:08:33 Generalise generalize generalise * 00:10:31 IntelliJ bug moving a function to a new package? * 00:11:40 IntelliJ bug moving file * 00:12:05 Proxies for structural typing * 00:20:59 Just one wafer-thin fly in the ointment The code for this video is on a GitHub fork https://github.com/dmcg/ktor-documentation This video is in a playlist of Ktor episodes (https://www.youtube.com/playlist?list=PL1ssMPpyqochUiQEM9PZ_P-9CbV1Il81B) and http4k (https://www.youtube.com/playlist?list=PL1ssMPpyqocg5TKqmiGWlvi3O5L8XPe8Q) If you like this video, you’ll probably like my book Java to Kotlin, A Refactoring Guidebook (http://java-to-kotlin.dev). It's about far more than just the syntax differences between the languages - it shows how to upgrade your thinking to a more functional style. |
| Category | Science & Technology |
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