Solidity: The pure getter and view functions

Solidity provides two particular types of getter functions: view and pure.

The view functions

view allows the state to be read but does not allow the state to be modified:

uint public a = 1;
function viewFunction(uint b) public view returns (uint) {
  return a + b;
}

Let’s compile and deploy the contract. Then call the viewFunction() function:

The result is 3 = 1 + 2.