dam5s

sealed class Result<A, E> {

    fun <B> map(mapping: (A) -> B): Result<B, E> =
        when (this) {
            is Success -> Success(mapping(value))
            is Failure -> Failure(reason)
        }
    fun <B> bind(mapping: (A) -> Result<B, E>): Result<B, E> =
        when (this) {
            is Success -> mapping(value)

y-polek

import android.arch.lifecycle.LiveData
import android.arch.lifecycle.MediatorLiveData
import android.arch.lifecycle.MutableLiveData

fun <X, Y> LiveData<X>.map(func: (X?) -> Y?): MutableLiveData<Y?> {
    return MediatorLiveData<Y>().apply {
        addSource(this@map) { x -> value = func(x) }
    }
}

JoseAlcerreca

/**
 * Used as a wrapper for data that is exposed via a LiveData that represents an event.
 */
open class Event<out T>(private val content: T) {

    var hasBeenHandled = false
        private set // Allow external read but not write

    /**
     * Returns the content and prevents its use again.

NiPfi

package ch.jojoni.jamplan.model.repository;

import android.support.annotation.NonNull;
import android.util.Log;

import com.google.android.gms.tasks.Continuation;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.DocumentReference;

bleeding182

class App : Application() {

    @Inject
    lateinit var applicationInjector: ApplicationInjector

    override fun onCreate() {
        super.onCreate()

        DaggerAppComponent.create().inject(this)
        registerActivityLifecycleCallbacks(applicationInjector)

plnice

fun withDrawable(@DrawableRes id: Int, @ColorRes tint: Int? = null, tintMode: PorterDuff.Mode = SRC_IN) = object : TypeSafeMatcher<View>() {
    override fun describeTo(description: Description) {
        description.appendText("ImageView with drawable same as drawable with id $id")
        tint?.let { description.appendText(", tint color id: $tint, mode: $tintMode") }
    }

    override fun matchesSafely(view: View): Boolean {
        val context = view.context
        val tintColor = tint?.toColor(context)
        val expectedBitmap = context.getDrawable(id).tinted(tintColor, tintMode).toBitmap()

saschpe

import android.content.SharedPreferences
import android.os.Bundle
import android.os.Parcel

inline fun <reified T : Enum<T>> Bundle.getEnum(key: String, default: T) =
        getInt(key).let { if (it >= 0) enumValues<T>()[it] else default }

fun <T : Enum<T>> Bundle.putEnum(key: String, value: T?) =
        putInt(key, value?.ordinal ?: -1)

magneticflux-

//--------------------------------
// CHECK THE COMMENTS FOR UPDATES!
//--------------------------------

/*
 * Copyright (C) 2017 Mitchell Skaggs, Keturah Gadson, Ethan Holtgrieve, Nathan Skelton, Pattonville School District
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or

florina-muntenescu

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

cbeyls

Function	Function type	Target passed as	Returns
also	Extension	it	Target
apply	Extension	this	Target
let	Extension	it	Block return value
run	Extension	this	Block return value
with	Regular	this	Block return value