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Interchangeable Most of the Time You can define untyped variables by declaring them using the ‘var’ or ‘dynamic’ keywords. The ‘var’ keyword declares a variable without specifying its type, leaving the variable as a dynamic. No type is specified. The ‘dynamic’ keyword declares a variable of the type ‘dynamic’ with optional typing. It marks variable as 'not type checked'. Exception (Methods) Methods need to return a type so they will work with 'dynamic' but  wont work with 'var': void main() {   print (multiplyMethod1(2,4));   print (multiplyMethod2(2,4)); }   dynamic multiplyMethod1(int a, int b){   return a * b; }  ...

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Google Flutter -

In Dart, you compare equality using the ‘==’ operator rather than an ‘equals’ method. Sometimes you need to override it this operator in your class to ensure that instances of the classes are compared correctly....

 

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