coroutine like block code

app/src/main/AndroidManifest.xml

@@ -46,6 +46,10 @@
             android:exported="true"
             android:theme="@style/Theme.CourseCoroutines" />
 
+        <activity android:name="._1_basics.DeMagicActivity"
+            android:exported="true"
+            android:theme="@style/Theme.CourseCoroutines" />
+
     </application>
 
 </manifest>

app/src/main/java/com/novar/supercorouutine/_1_basics/7_de_magic.kt

@@ -0,0 +1,43 @@
+package com.novar.supercorouutine._1_basics
+
+import android.os.Bundle
+import android.os.Handler
+import android.os.HandlerThread
+import android.os.Looper
+import android.widget.TextView
+import androidx.activity.ComponentActivity
+import androidx.lifecycle.lifecycleScope
+import com.novar.supercorouutine.R
+import com.novar.supercorouutine.common.Contributor
+import com.novar.supercorouutine.common.gitHub
+import kotlinx.coroutines.launch
+import kotlin.concurrent.thread
+
+class DeMagicActivity : ComponentActivity() {
+    private lateinit var infoTextView: TextView
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.layout_1)
+        infoTextView = findViewById(R.id.infoTextView)
+
+        lifecycleScope.launch {
+//      switchToBackground {
+//        gitHub.contributors("square", "retrofit")
+//        switchToMain {
+//          showContributors(contributors)
+//        }
+//      }
+        }
+    }
+
+    private fun coroutinesStyle() = lifecycleScope.launch {
+        val contributors = gitHub.contributors("square", "retrofit")
+        showContributors(contributors)
+    }
+
+    private fun showContributors(contributors: List<Contributor>) = contributors
+        .map { "${it.login} (${it.contributions})" }
+        .reduce { acc, s -> "$acc\n$s" }
+        .let { infoTextView.text = it }
+}