Anonymous and arrow function in dart Anonymous Function Anonymous functions are used to create blocks of code that can be operated on or passed as arguments to other functions without having to give an official name to the function. written with : () { //command that will be executed when the function is called } var summation = (int x, int y) { return x + y; }; void main() { var result = summation(6, 7); print(result); } image 1 anonymous function result Arrow Function This is a short way to create a function without a name. This syntax can be used for functions that return a value (non-void) or functions that do not return a value (void). written with : ( ) => the process that is executed when the function is called( ); Example: var summation = (int x, int y) => x + y; void main() { var result = summation(9, 12); print(result); } image 2 arrow function result List Stores data in a row, each data has an index, the first data is the 0th index, so the list starts from 0 not from 1. image 3 list MAP Stores data in a key-value manner key is as useful as an index on a list image 4 MAP