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smart_contract_helloworld

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:fire: Smart contract hello world tutorial: write and deploy your first Ethereum smart contract!

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# Smart Contract Hello World

This repository presents practices about:

- Setup a blockchain.
- Develop Ethereum smart contract.
- Deploy the contract and test it.

## Quick Demo

*The main instructions are given below and also the tutorial video of this project can be found on [my YouTube channel](https://www.youtube.com/watch?v=Oxdop144I7Q).*

First, clone the repository and build the project using truffle by this command:

truffle build

After building the project and starting ganache which provides ethereum blockchain network on your local, our smart contract can be deployed using truffle by this command:

truffle migrate

Now, our smart contract has been built and deployed so we can perform test on it by these commands respectively:

var hw;
    Main.deployed().then(function(d){hw = d;});
    hw.setUserName("Ahmet")
    hw.printMessage.call() // prints Hello Ahmet!

Moreover, you can use [developed unit test class](https://github.com/ahmetozlu/smart_contract_helloworld/blob/main/test/Main.test.js) to perform unit testing:

truffle test

## Installation

### Setup

- **Truffle**

sudo npm install -g truffle@5.1.39 --unsafe-perm=true

- **Ganache** installation guide can be found in [here](https://www.trufflesuite.com/ganache).

## Citation
If you use this code for your publications, please cite it as:

@ONLINE{vdtct,
        author = "Ahmet Özlü",
        title  = "Smart Contract Hello World",
        year   = "2021",
        url    = "https://github.com/ahmetozlu/smart_contract_helloworld"
    }

## Author
Ahmet Özlü

## License
This system is available under the MIT license. See the LICENSE file for more info.

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