vaughandroid

package com.vaughandroid.test.espresso.idlingresources;

import android.app.Activity;
import android.os.Handler;
import android.support.annotation.IdRes;
import android.support.annotation.NonNull;
import android.support.test.espresso.*;
import android.view.View;

import java.lang.ref.WeakReference;

vaughandroid

@Component(modules=MyModule.class)
@ApplicationScope
public interface MyComponent {
    void inject(MyApplication application);
}

@Module
public class MyModule {
    
    @Provides @ApplicationScope

vaughandroid

@Component(modules=MyModule.class)
@ApplicationScope
public interface MyComponent {
    void inject(MyApplication application);
}

@Module
public class MyModule {
    @Provides @ApplicationScope
    public String provideString() {

athkalia

<?xml version="1.0"?>
<ruleset name="mybraces"
         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">

    <description>PMD rules and properties</description>

    <!--Specify the rule files and exclusions. Some rules have priority less than
        warning and they don't trigger the teamcity fail build capability.-->

JakeWharton

interface Thing {
  Object thing();
}

class CharSequenceThing implements Thing {
  @Override public CharSequence thing() {
    return "CharSequence!";
  }
}

JakeWharton

interface Thing<T> {
  T thing();
}

class CharSequenceThing implements Thing<CharSequence> {
  @Override public CharSequence thing() {
    return "CharSequence!";
  }
}

dlew

public static Action1<Throwable> crashOnError() {
    final Throwable checkpoint = new Throwable();
    return throwable -> {
        StackTraceElement[] stackTrace = checkpoint.getStackTrace();
        StackTraceElement element = stackTrace[1]; // First element after `crashOnError()`
        String msg = String.format("onError() crash from subscribe() in %s.%s(%s:%s)",
            element.getClassName(),
            element.getMethodName(),
            element.getFileName(),
            element.getLineNumber());

rock3r

Usage

$ demo on|off [hhmm]

Enable or disable the demo mode on a connected Android device or emulator. You can also pass in a custom value for the system clock in the HHMM format (only used when you use the on command).

⚠️ This script only works on *nix systems and has only been tested on macOS with Bash (but should be portable).

andymatuschak

A composable pattern for pure state machines with effects

State machines are everywhere in interactive systems, but they're rarely defined clearly and explicitly. Given some big blob of code including implicit state machines, which transitions are possible and under what conditions? What effects take place on what transitions?

There are existing design patterns for state machines, but all the patterns I've seen complect side effects with the structure of the state machine itself. Instances of these patterns are difficult to test without mocking, and they end up with more dependencies. Worse, the classic patterns compose poorly: hierarchical state machines are typically not straightforward extensions. The functional programming world has solutions, but they don't transpose neatly enough to be broadly usable in mainstream languages.

Here I present a composable pattern for pure state machiness with effects,

lawloretienne

Table Of Contents

• Data Structures
  • Linked Lists
  • Trees
    • Binary Trees
    • Binary Search Tree
    • Red-Black Tree
    • AVL Tree
• Tries