michaelzengke

ADDS (Action Delegate Delegatee viewState) — A Kotlin Coroutines Based Android Architecture Pattern

Author: Michael Zeng

Contents

• Introduction
• Kotlin Coroutines Basics
• View State
• Action Worker

raulraja

import arrow.Kind
import arrow.core.Option
import arrow.core.left
import arrow.core.right
import arrow.effects.typeclasses.Async
import arrow.typeclasses.ApplicativeError

data class UserId(val value: String)
data class User(val userId: UserId)
data class Task(val value: String)

raulraja

import arrow.*
import arrow.core.*
import arrow.typeclasses.*
import arrow.data.*

sealed class ValidationError(val msg: String)
data class DoesNotContain(val value: String) : ValidationError("Did not contain $value")
data class MaxLength(val value: Int) : ValidationError("Exceeded length of $value")
data class NotAnEmail(val reasons: Nel<ValidationError>) : ValidationError("Not a valid email")

raulraja

import arrow.Kind
import arrow.core.Option
import arrow.core.Try
import arrow.core.functor
import arrow.effects.IO
import arrow.effects.fix
import arrow.effects.functor
import arrow.typeclasses.Functor

/* algebras */

pakoito

sealed class NaturalNum

object Zero: NaturalNum()

class PlusOne<N: NaturalNum>(): NaturalNum()

fun num(zero: Zero) = 0

fun num(one: PlusOne<Zero>) = 1

digitalbuddha

@Value.Immutable 
@Value.Style(allParameters = true)
public abstract class Foo implements FooModel{
    public static final FooModel.Mapper<Foo> MAPPER = new FooModel.Mapper<>((Mapper.Creator<Foo>) ImmutableFoo::of);
    public static final class Marshal extends FooModel.FooMarshal {}
}

dlew

Libraries

• Andele
• android-permissions-gradle-plugin
• android-permission-manager
• AndroidPermissions
• assent
• Dexter
• EasyMPermission
• EasyPermissions

konmik

/**
 * This class allows to inject into objects through a base class,
 * so we don't have to repeat injection code everywhere.
 *
 * The performance drawback is about 0.013 ms per injection on a very slow device,
 * which is negligible in most cases.
 *
 * Example:
 * <pre>{@code

dmarcato

def toCamelCase(String string) {
    String result = ""
    string.findAll("[^\\W]+") { String word ->
        result += word.capitalize()
    }
    return result
}

afterEvaluate { project ->
    Configuration runtimeConfiguration = project.configurations.getByName('compile')

daniellevass

<?xml version="1.0" encoding="utf-8"?>
<resources>

<!-- google's material design colours from 
http://www.google.com/design/spec/style/color.html#color-ui-color-palette -->

    <!--reds-->
    <color name="md_red_50">#FFEBEE</color>
    <color name="md_red_100">#FFCDD2</color>
    <color name="md_red_200">#EF9A9A</color>