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體驗 Kotlin DSL 的魅力 - 范聖佑, Freddie Wang

tags: `COSCUP2020` `中階` `TR313`

歡迎來到 https://hackmd.io/@coscup/2020 共筆

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What's DSL

DSL (Domain Specific Language) 通常是為了滿足某個特定領域的需求而開發

SQL
Regular Expression
Gradle

External and Internal DSL

Why Kotlin DSL

支援 top-level function、extension function、Lambda with receiver
內建 type-safe

Real world DSL

Gradle
HTML
- Kotlinx.html
  - 不需要 opening and closing tag
  - 語法、階層驗證
  - 可以使用 Kotlin 部分語法
Exposed SQL Framework
- Exposed
Ktor
- Ktor
Space
kotlin.tips

Cheatsheet

Syntax	Example	Reference
# Header	Header	基本排版
- Unordered List	Unordered List
1. Ordered List	Ordered List
- [ ] Todo List	Todo List
> Blockquote	Blockquote
Bold font	Bold font
Italics font	Italics font
~~Strikethrough~~	~~Strikethrough~~
19^th^	19^th
H~2~O	H₂O
++Inserted text++	Inserted text
==Marked text==	Marked text
[link text](https:// "title")	Link
![image alt](https:// "title")	Image
`Code`	`Code`	在筆記中貼入程式碼
```javascript var i = 0; ```	`var i = 0;`	在筆記中貼入程式碼
:smile:		Emoji list
{%youtube youtube_id %}	Externals
$L^aT_eX$	L^aT_eX
:::info This is a alert area. :::	This is a alert area.

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