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import { render } from 'react-dom'
import React, { useState } from 'react'
import { useSprings, animated } from 'react-spring'

const items = ['hey', 'yooo']

function ReactSpringExample() {
  const [pos, setPos] = useState(0)
  const springs = useSprings(items.length, items.map((item, i) => ({
    opacity: pos === i ? 1 : 0,

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import android.app.Activity;

import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.OnLifecycleEvent;

import java.lang.ref.WeakReference;
import java.util.function.Consumer;

public class ActivityLifecycleListener implements LifecycleObserver {

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Rails Polymorphic Association Query

Example use case:

class User < ApplicationRecord
  belongs_to :authable, polymorphic: true, optional: true
end
 
class Google < ApplicationRecord

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/*
implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
implementation 'com.google.android.material:material:1.1.0-alpha08'
*/

public class MultipleTurbolinksViewActivity extends BaseActivity {

    private ActivityMultipleTurbolinksViewBinding binding;
    private String[] paths = new String[]{"/", "/profile"};

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require "colorize"
arr_loading = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]

i = 0
loop do
  print "#{arr_loading[i % arr_loading.size]}\r".colorize(:light_magenta)
  i += 1
  sleep(0.1)
end

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Connecting to a local rails project from android

Find your public ip

ifconfig |grep inet

or

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.example">
    <!-- ... -->
    <application
        <!-- ... --> >
  
        <!-- ... -->

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<androidx.appcompat.widget.AppCompatEditText
    android:background="@null"  
    android:inputType="none"
    android:textIsSelectable="false"
    android:cursorVisible="false"
    android:focusable="false"
    android:layout_width="200dp"
    app:layout_constrainedWidth="true"
    android:scrollHorizontally="true"
    android:singleLine="true"

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public final class RxBus {
    // String can be replaced with any kind of Object.
    private static final BehaviorSubject<String> behaviorSubject
            = BehaviorSubject.create();
  
    public static Disposable subscribe(@NonNull Consumer<String> action) {
        return behaviorSubject.subscribe(action);
    }

    public static void publish(@NonNull String value) {

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public class QrActivity extends AppCompatActivity implements QRCodeReaderView.OnQRCodeReadListener {
    private QRCodeReaderView qrCodeReaderView;
    private static final int MY_CAMERA_REQUEST_CODE = 100;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_qr);

        if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {