Booleans in Solidity

The first one you’ll need to know are simple booleans. They can be true or false!

Video

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Code

Add the following code to a new file called “ExampleBoolean.sol”

//SPDX-License-Identifier: MIT
 
pragma solidity 0.8.14;
 
contract ExampleBoolean {
 
    bool public myBool;
 
    function setMyBool(bool _myBool) public {
        myBool = _myBool;
    }
 
}

Quick open in Remix 

Test the Smart Contract

When you head over to the Deploy & Run Transaction Plugin, try to get the default value of the boolean, which is “false”.

Update the boolean to true, and then retrieve the value.

Next

That’s basically all there is to booleans. They work very similar as in other programming languages. Off to Integers and unsigned Integers!