Dart Basic with Codes

Dart is a client-optimized programming language for apps on multiple platforms. It is developed by Google and is used to build mobile, desktop, server, and web applications. Dart is an object-oriented, class-based, garbage-collected language with C-style syntax. Dart can compile to either native code or JavaScript.

  Installation

1. Dart SDK

2. Download IntelliJ IDEA 

3. install Dart plugin in IntelliJ IDEA

Basic Codes 

void main(){
  print('Hello Rz');
}
Decision Making 
else if Statement
Electricity calculator 

import 'dart:io';
void main(){
  var pre, cur, amt, units;
  print ('Enter previous units :');
  pre = int.parse(stdin.readLineSync());
  print ('Enter current units :');
  cur = int.parse(stdin.readLineSync());
  units=cur-pre;
  print('Consumed units: ${units}');
  if (units==0){
    print('You have to pay 50');
  }else if(units>=1 && units<=100){
    print('You have to pay ${units*05}');
  }else if(units>100 && units<=200){
    print ('You have to pay ${units*1.5}');
  }else{
    print ('You have to pay ${units*3}');
  }
}
  
Nested IF Statement
Vote calculator 
import 'dart:io';
void main(){
  var age, gender;
  print('Enter your age: ');
  age=int.parse(stdin.readLineSync());
  print('Enter your gender');
  gender=stdin.readLineSync();
  if(age>=18){
    if(gender=='M'||gender=='m'){
      print('Go to Room No.5');
    }else{
      print('Go to Room No.7');
    }
  }else{
    print('You are not eligible to vote');
  }
}

objects and constructors
void main()
{
  var superman = Hero('Clark'); //Create object
  superman.myPower();//use of objects hero class
}

class Hero{
  String name;
  Hero(this.name); //constructor use in Dart

  myPower(){
    print('${name} can fly');
  }
}