var and dynamic keyword

 ///"var" keyword : One of many ways, and the simplest way, to define a variable in Dart is using the var key word.

void main() {
  ///One of many ways, and the simplest way, to define a variable in Dart is using the "var" keyword.
  var message = "Hello World";  //Here, variable "message" will be of String Data type value
  ///This example creates a variable called message and also initializes the variable with a String value of "Hello World".

  //message = 21.90; //Not Allowed
  //message = 7;  //Not Allowed

  message = "Next Time";  //Allowed, Variable value will be Override with same data Type value(In Declaration time)
  print(message);


  ///Dart is a typed language. The type of the variable message is String. Dart can infer this type,
  ///so you didn't have to explicitly define it as a String. Importantly, this variable must be a String forever.
  ///You cannot re-assign the variable as an integer. If you did want to create a variable that's more dynamic,
  ///you'd use the dynamic keyword.


///"dynamic" keyword:
  dynamic v1 = "How are you ?";

  v1 = 33.89; //Allowed, You can safely re-assign this variable to an integer.
  v1 = "abc"; //In case of "dynamic", variable values will be Override
  v1 = 5;     //variable value will be Override
  print(v1);

  ///It's rarely advisable to use dynamic. Your code will benefit from being type safe.
}