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class Contact {
  // Constructor is marked 'const' so all fields must be final.
  final String name;
  final int age;

  // const at class level have to go along with static keyword
  static const alive = true;

  // const constructor
  const Contact(this.name, this.age);

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class Contact {
    String name;
    int age;

    Contact(this.name, this.age);

    @override
    String toString() {
        return "$name: $age";
    }

anhtuank7c

package com.example;

import android.content.Context
import android.content.Context.AUDIO_SERVICE
import android.media.AudioAttributes
import android.media.AudioFocusRequest
import android.media.AudioManager
import android.os.Build
import android.os.Bundle
import android.speech.tts.TextToSpeech

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// Expo SDK40
// expo-blur: ~8.2.2
// expo-haptics: ~8.4.0
// react-native-gesture-handler: ~1.8.0
// react-native-reanimated: ^2.0.0-rc.0
// react-native-safe-area-context: 3.1.9

import React, { useState } from 'react';
import {
  Image,

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/*
Before Septemper 15 2018, Vietnam has phone number start with 09*, 01(2|6|8|9).
After that, the phone number can start with 03, 05, 07 or 08.
So this function provide a way to validate the input number is a Vietnamese phone number
*/

function isVietnamesePhoneNumber(number) {
  return /(03|05|07|08|09|01[2|6|8|9])+([0-9]{8})\b/.test(number);
}

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import React, {memo, useEffect, useState} from 'react';
import {Animated, Platform, StyleSheet} from 'react-native';
import {AnimatedRegion, Marker} from 'react-native-maps';
import {Car} from '../../../../../Assets/Images';

function VehicleMarker({
  data,
  tripIndex,
  initLatDelta,
  initLongDelta,

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import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import androidx.lifecycle.Lifecycle.Event.ON_DESTROY
import androidx.lifecycle.Lifecycle.Event.ON_START
import androidx.lifecycle.LifecycleObserver
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.OnLifecycleEvent
import android.content.BroadcastReceiver as StockReceiver

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import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import androidx.lifecycle.Lifecycle.Event.ON_DESTROY
import androidx.lifecycle.Lifecycle.Event.ON_START
import androidx.lifecycle.LifecycleObserver
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.OnLifecycleEvent
import android.content.BroadcastReceiver as StockReceiver

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>HKAtrialFibrillationDetectionOnboardingCompleted</key>
	<integer>1</integer>
	<key>HKElectrocardiogramOnboardingCompleted</key>
	<integer>3</integer>
</dict>
</plist>

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    private fun showMultiStableInfo(stableKeys: Set<Any?>) {
        val scope = CoroutineScope(Dispatchers.Default)
        scope.launch {

            var stables = arrayListOf<Stable>()
            stableKeys.forEach { key ->
                key?.let { stableID ->
                    val job = CoroutineScope(Dispatchers.Default).async {
                        suspendCoroutine<Stable?> { cont ->
                            myRef.child("stables").child(stableID as String).addListenerForSingleValueEvent(object : ValueEventListener {