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A leader menu for Dance

I didn't find a nice way to use space as a leader key when the terminal is focused, so I'm using f1. shift+space may be a nice alternative.

[
    {
        "key": "space",
        "command": "dance.openMenu",
 "args": { "menu": "leader" },

#Intro

Kotlin is a new programming language for the JVM. It produces Java bytecode, supports Android and generates JavaScript. The latest version of the language is Kotlin M5.3

Kotlin project website is at kotlin.jetbrains.org.

All the codes here can be copied and run on Kotlin online editor.

Let's get started.

This is a quick guide to Kotlin programming language. The previous part of this guide is here

#Object Oriented

fun main(args : Array<String>) {
  class local (val x : Int)
  
  val y = local(10)
 println("${y.x}")

	var d = new Date();
	var usertime = d.toLocaleString();

	// Some browsers / OSs provide the timezone name in their local string:
	var tzsregex = /\b(ACDT\|ACST\|ACT\|ADT\|AEDT\|AEST\|AFT\|AKDT\|AKST\|AMST\|AMT\|ART\|AST\|AWDT\|AWST\|AZOST\|AZT\|BDT\|BIOT\|BIT\|BOT\|BRT\|BST\|BTT\|CAT\|CCT\|CDT\|CEDT\|CEST\|CET\|CHADT\|CHAST\|CIST\|CKT\|CLST\|CLT\|COST\|COT\|CST\|CT\|CVT\|CXT\|CHST\|DFT\|EAST\|EAT\|ECT\|EDT\|EEDT\|EEST\|EET\|EST\|FJT\|FKST\|FKT\|GALT\|GET\|GFT\|GILT\|GIT\|GMT\|GST\|GYT\|HADT\|HAEC\|HAST\|HKT\|HMT\|HST\|ICT\|IDT\|IRKT\|IRST\|IST\|JST\|KRAT\|KST\|LHST\|LINT\|MART\|MAGT\|MDT\|MET\|MEST\|MIT\|MSD\|MSK\|MST\|MUT\|MYT\|NDT\|NFT\|NPT\|NST\|NT\|NZDT\|NZST\|OMST\|PDT\|PETT\|PHOT\|PKT\|PST\|RET\|SAMT\|SAST\|SBT\|SCT\|SGT\|SLT\|SST\|TAHT\|THA\|UYST\|UYT\|VET\|VLAT\|WAT\|WEDT\|WEST\|WET\|WST\|YAKT\|YEKT)\b/gi;

	// In other browsers the timezone needs to be estimated based on the offset:
	var timezonenames = {"UTC+0":"GMT","UTC+1":"CET","UTC+2":"EET","UTC+3":"EEDT","UTC+3.5":"IRST","UTC+4":"MSD","UTC+4.5":"AFT","UTC+5":"PKT","UTC+5.5":"IST","UTC+6":"BST","UTC+6.5":"MST","UTC+7":"THA","UTC+8":"AWST","UTC+9":"AWDT","UTC+9.5":"ACST"