Kotlin Async/Await

package com.example.myapplication

import android.os.Bundle
import android.os.Handler
import android.os.Looper
import android.support.v7.app.AppCompatActivity
import android.widget.TextView
import java.net.URL

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val text1 = findViewById(R.id.text1) as TextView
        val text2 = findViewById(R.id.text2) as TextView

        async { // C# Style
            try {
                text1.text = await(URL("https://fb.com/")
                    .readTextAsync()) // Асинхронный запрос
                    .getTitle()
                    .toUpperCase()
            } catch (e: Exception) {
                text1.text = "ERROR: $e"
            }
        }

        async { // Monad Style
            text2.text = URL("https://ru.wikipedia.org/")
                .readTextAsync() // Асинхронный запрос
                .than { it.getTitle() }
                .than { it.toUpperCase() }
                .onError { "ERROR: $it" }
        }
    }

    private fun String.getTitle() = Regex("<title>(.+?)</title>").find(this)!!.groupValues[1]
}