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Pure And The View In Solidity

In this article, we will discuss the difference between the pure and the view functions in Solidity.

Pure Function

A pure function does not read or modify any state variables. It only works with data passed to it or with local variables inside the function.

View Function

A view function can read state variables but cannot modify them.

Example

// SPDX-License-Identifier: MIT
pragma solidity 0.8.26;

contract PureViewDemo {

    uint8 public state_var = 50; 
    
    function viewDemo() public view returns (uint) {
        return state_var;  
    }

    function pureDemo(uint a, uint b) public pure returns (uint) {
        return a + b;
    } 

}

In the above code, we can access the state variable (state_var) inside the view function. But in pure function, we can pass input parameters to the function.

Output

Posted By -	Karan Gupta

Posted On -	Wednesday, October 16, 2024

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