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created: 20231217005152232
creator: Octt
modified: 20231217005816030
modified: 20231223160619490
modifier: Octt
tags:
title: Kotlin
<<^wikipediaframe Kotlin>>
* [[Get type of a variable in Kotlin|https://stackoverflow.com/questions/45165143/get-type-of-a-variable-in-kotlin]] --- `if (var is Class) ...`
* [[What's the difference between !! and ? in Kotlin?|https://stackoverflow.com/questions/44536114/whats-the-difference-between-and-in-kotlin]] --- when `obj` is null, `obj!!` throws `NullPointerException`, `obj?` returns `null`
* [[How to do url encoding for query parameters in Kotlin|https://stackoverflow.com/questions/56942341/how-to-do-url-encoding-for-query-parameters-in-kotlin#56942734]] --- `URLEncoder.encode(text, "utf-8")`