ThinkDigitalSoftware

import 'dart:async';
void main() {
 int count = 0;
 var counterController = new StreamController();
  counterController.stream.listen((value) => print(value));

  void increment() {
    counterController.add(count++);
  }

ThinkDigitalSoftware

void main() {
 var one = enumString.HELLO;
  print(one);
  if(one == enumString.HELLO)
    print("$one, Jonathan!");
}

class enumString{
  static const HELLO="hello";
}

ThinkDigitalSoftware

main() {
  // ?? operator
  print("\n?? operator \n");
  var x; // x is null
  String otherExp = "x is null";
  print(x ?? otherExp); // returns otherExp, which is a String, to print.
  var isXNull = x ?? true;
  print(isXNull);

  //is the same as

ThinkDigitalSoftware

#! /bin/sh
if [ -z "$1" ]
    then
        echo "Please enter a channel name after \"flutter_update\""
    else
        cd ~/development/flutter/
        git pull
        flutter channel $1
    fi

ThinkDigitalSoftware

import java.nio.file.Path
import java.nio.file.Paths

import com.android.builder.model.AndroidProject
import org.apache.tools.ant.taskdefs.condition.Os
import org.gradle.api.DefaultTask
import org.gradle.api.GradleException
import org.gradle.api.Project
import org.gradle.api.Plugin
import org.gradle.api.Task

ThinkDigitalSoftware

main(){
 String number = "3231234545";
 String xedNumber="";
	for(int i = 0; i < number.length; i++){
    if(i > 2 && i< number.length - 2)
      xedNumber += "x";
    else
      xedNumber += number[i];
  }
  print(xedNumber);

ThinkDigitalSoftware

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.

ThinkDigitalSoftware

Card(
      color: backgroundColor,
      margin: EdgeInsets.symmetric(vertical: 10, horizontal: 5),
      child: Padding(
        padding: const EdgeInsets.only(
            left: 15,
            right: 5,
            top: 8,
            bottom: 8), //symmetric(vertical: 8.0, horizontal: 15),
        child: new Row(

ThinkDigitalSoftware

FAILURE: Build failed with an exception.

* What went wrong:
Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
> Could not find com.google.android.exoplayer:exoplayer-hls:2.9.1.
  Searched in the following locations:
    - file:/Users/thinkdigital/Library/Android/sdk/extras/m2repository/com/google/android/exoplayer/exoplayer-hls/2.9.1/exoplayer-hls-2.9.1.pom
    - file:/Users/thinkdigital/Library/Android/sdk/extras/m2repository/com/google/android/exoplayer/exoplayer-hls/2.9.1/exoplayer-hls-2.9.1.jar
    - file:/Users/thinkdigital/Library/Android/sdk/extras/google/m2repository/com/google/android/exoplayer/exoplayer-hls/2.9.1/exoplayer-hls-2.9.1.pom
    - file:/Users/thinkdigital/Library/Android/sdk/extras/google/m2repository/com/google/android/exoplayer/exoplayer-hls/2.9.1/exoplayer-hls-2.9.1.jar

ThinkDigitalSoftware

void main() async {
 await SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
runApp(MyApp());
…
}