husen-hn

bindsym $mod+0 mode "$mode_system"
set $mode_system (l)ock, (e)xit, switch_(u)ser, (s)uspend, (h)ibernate, (r)eboot, (Shift+s)hutdown
mode "$mode_system" {
    bindsym l exec --no-startup-id i3exit lock, mode "default"
    bindsym s exec --no-startup-id i3exit suspend, mode "default"
    bindsym u exec --no-startup-id i3exit switch_user, mode "default"
    bindsym e exec --no-startup-id i3exit logout, mode "default"
    bindsym h exec --no-startup-id i3exit hibernate, mode "default"
    bindsym r exec --no-startup-id i3exit reboot, mode "default"
    bindsym Shift+s exec --no-startup-id i3exit shutdown, mode "default"

husen-hn

exec --no-startup-id start-pulseaudio-x11
exec --no-startup-id pa-applet
bindsym $mod+Ctrl+m exec pavucontrol

husen-hn

data class MyData(var value: String)

fun main() {
  	var mutable = MyData("Foo")
	val immutable = MyData("Bar")

	mutable = immutable    // This is fine
	immutable = mutable    // This will not compile
}

husen-hn

class Space{
   var squares = 24
   var triangles = 23

   val all: Int
       get() {
           return squares + triangles
       }
}

husen-hn

val space = Space()

println(space.all) // result 47

val squares = 30
space.squares = squares * 2

println(space.all) // result 84

husen-hn

sealed class MyValue(default: String) {

   open val value: String = default

   class Immutable(default: String): MyValue(default) {
       fun mutate(): Mutable = Mutable(value)
   }

   class Mutable(default: String) : MyValue(default) {
       fun immutate(): Immutable = Immutable(value)

husen-hn

val mutable = MyValue.Mutable("Foo")
val immutable = MyValue.Immutable("Foo")

mutable.value = "Bar"    // This is fine

immutable.value = "Bar"  // This will not compile because value cannot be reassigned

val mutated = immutable.mutate()
mutated.value = "Bar"    // This is fine

husen-hn

class MyOtherValue(default: String) {
   lateinit var value: String
       private set
}

husen-hn

val myOtherValue = MyOtherValue("Foo")

myOtherValue.value = "Bar"  // This will not compile because value cannot be reassigned

husen-hn

class MutableObj { 
    var value = "" 
 
    override fun toString(): String { 
        return "MutableObj(value='$value')" 
    } 
} 
 
fun main() { 
    val mutableObj:MutableObj = MutableObj()//(1)