# Kotlin

1. 在开发中使用Kotlin有什么奇巧淫技？ - 药罐子千里冰封的回答 - 知乎 <https://www.zhihu.com/question/61758585/answer/190783842>
2. ![image-20201224234712461](/files/-MPZDbccre5mPeOowk1e)

   Kotlin 1.4 新推出了一个关键字 tailrec , 可以使用它 去主动编译优化 尾调用的函数. <https://twitter.com/kotlin/status/1341749661175066624?s=20>

   先不提尾调用是什么, 就说说 都 2020 年了, 现代的编译器还做不到 主动优化尾调用嘛.. (V8 做到了,但因为一些问题 不敢主动开启)

   这个关键字很破环我对 Kotlin 的印象..

   它就和 C++ 中的 inline, volatile 代表的性质一样... 这些关键字的出现 是为了弥补 底层设计的缺陷... 之所以 C++ 的定位是偏底层语言, 就因为 它的语法特性 就离不开操作系统那些概念..

   而一个优秀 现代的编程语言 是不应该为用户增加此心智负担的.

   A: kotlin也有inline 还有refied这种类型擦除后再生 给Java擦屁股
3. 分享篇文章： \
   New Language Features Preview in Kotlin 1.4.30

   <https://blog.jetbrains.com/kotlin/2021/02/new-language-features-preview-in-kotlin-1-4-30/>

![如此语义化, 看着就赏心悦目..](/files/-MPrEICzdFvqWioojX3k)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://thinking.simonaking.com/tags/pl/kotlin.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.