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How I Built My First Smart Contract: A Simple Voting App in Solidity
I’ve just started learning Solidity to become a smart contract developer and to finally improve my coding skills. This post shares my first project — a simple voting app written and deployed using Remix. Project Summary Users can vote for a candidate. Each wallet can vote only once. Votes are stored on the blockchain. Smart contract written in Solidity 0.8.x Key Features struct Candidate { string name; uint voteCount; } We use an array of candidates and a mapping to prevent double-voting. require(!hasVoted[msg.sender], "Already voted!"); This line ensures no address can vote twice. What I Learned Solidity types and structures Basic contract deployment on Remix Using constructor() for initialization Importance of access control and validation What’s Next I plan to: Add a simple frontend (React + Ethers.js) Move to Hardhat for testing and local dev Explore how elections are built in real DeFi protocols
I’ve just started learning Solidity to become a smart contract developer and to finally improve my coding skills. This post shares my first project — a simple voting app written and deployed using Remix.
Project Summary
- Users can vote for a candidate.
- Each wallet can vote only once.
- Votes are stored on the blockchain.
- Smart contract written in Solidity 0.8.x
Key Features
struct Candidate {
string name;
uint voteCount;
}
We use an array of candidates and a mapping to prevent double-voting.
require(!hasVoted[msg.sender], "Already voted!");
This line ensures no address can vote twice.
What I Learned
- Solidity types and structures
- Basic contract deployment on Remix
- Using constructor() for initialization
- Importance of access control and validation
What’s Next
I plan to:
- Add a simple frontend (React + Ethers.js)
- Move to Hardhat for testing and local dev
- Explore how elections are built in real DeFi protocols
