Investigates how state is manipulated within a single block with multiple transactions in the Ethereum Virtual Machine (EVM).
We implement two simple functions in the contract to manipulate the counter variable in the contract. From the Solidity documentation on storage, memory, and the stack storage variables are stored permanently in the contract's storage. This means that whenever the contract is called, the value of the storage variable is read from or written to. Memory variables are temporary, meaning that their values are stored only during the execution of the function they are declared in. The stack is used to store small local variables.
Increments the counter by 1.
Decrements the counter by 1.
The contract includes a set of tests using the Hardhat testing framework. The tests cover various functionalities of the contract and ensure its proper behavior. Additionally, the contract includes a test that investigates how the state can be manipulated within a single block with multiple transactions in the Ethereum Virtual Machine (EVM).
To use the contract, you can follow these steps:
- Deploy the contract to an Ethereum network or a local development environment.
- Interact with the contract using the provided functions:
- Call
increment()to increment the counter. - Call
decrement()to decrement the counter.
- Call
To set up a development environment and run tests, you can follow these steps:
- Install Hardhat globally by running
npm install -g hardhat. - Clone the repository and navigate to the project directory.
- Install project dependencies by running
npm install. - Run the tests using the command
npx hardhat test.
Please note that you may need to configure your development environment and connect to a compatible Ethereum network or a local blockchain for deployment and testing.
The contract is provided under the UNLICENSED SPDX license. You are free to use, modify, and distribute the contract as per your requirements.