読んだ記事

Kotlin examples
Functional
Hight-Order Functions
Lambda Functions
Extension Functions and Properties
Productibity Boosters
Named Arguments
String Templates
Destructuring Declarations
Smart Cast

Kotlin Koans
Conventions
Comparison
Ranges
For loop

MDN WebXR Device API
WebXRの基礎
WebXRアプリケーションのライフサイクル

SQL Anti Pattern
IDリクワイアド

Echo Quick Start
Form application/x-www-form-urlencoded
Form multipart/form-data
Handling Request
Static Content
Middleware...