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# Now Playing for Übersicht
# v0.7.1
#
# For more info:
# http://github.com/levifig/now-playing.widget
#
# Levi Figueira
# http://levifig.com
#
# ==================================

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Git Cheat Sheet

Visit my blog or connect with me on Twitter

Commands

Getting Started

git init

or

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Extension functions:

Returns/Receiver	R (return value)	this (target)
(T)	let	also
T.()	run	apply

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Keybase proof

I hereby claim:

• I am lupajz on github.
• I am lupajz (https://keybase.io/lupajz) on keybase.
• I have a public key ASAzXw_SNd4o6ZPu4517fl2xS_1uelcYedY9WiRT3T5_xgo

To claim this, I am signing this object:

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sealed class Event {
  object One : Event()
  object Two : Event()
  data class Three(val int: Int) : Event()
}

inline fun <reified T : Any> T.ordinal() =
    T::class.java.superclass.classes.indexOfFirst { sub -> sub == this@ordinal::class.java }

fun testOrdinal() {

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package com.your.package

import android.app.Dialog
import android.os.Bundle
import com.your.package.R
import com.google.android.material.bottomsheet.BottomSheetDialog
import com.google.android.material.bottomsheet.BottomSheetDialogFragment

/**
 * BottomSheetDialog fragment that uses a custom 

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How View.invalidate() is processed in Android

This document is based on the code of android-4.1.1_r6 (Jelly Bean).

First, the invalidate() call will be propagated back to the root of the view hierarchy. During the propagation, the system determines the dirty area that needs to be redrawn. The propagation will eventually reach ViewRootImpl.

frameworks/base/core/java/android/view/View.java

10219   void invalidate(boolean invalidateCache) {

... ...

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/**
 * A lazy property that gets cleaned up when the fragment is destroyed.
 *
 * Accessing this variable in a destroyed fragment will throw NPE.
 */
class AutoClearedValue<T : Any> : ReadWriteProperty<Fragment, T>, LifecycleObserver {
    private var _value: T? = null

    override fun getValue(thisRef: Fragment, property: KProperty<*>): T =
        _value ?: throw IllegalStateException("Trying to call an auto-cleared value outside of the view lifecycle.")

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tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

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interface Listener {
   fun performNewAction(actionId: String)
   fun performOldAction()
}

class Presenter {
  
  var listenerRef: Listener? = null
  
  fun display() {