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created: 20231217005152232
creator: Octt
modified: 20231217005816030
modifier: Octt
tags:
title: Kotlin
<<^wikipediaframe Kotlin>>
* [[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")`
* [[How to create a JSONObject from String in Kotlin?|https://stackoverflow.com/questions/44295665/how-to-create-a-jsonobject-from-string-in-kotlin]] --- `JSONObject("""{ "name": "test" }""")`