Ralph-Chris

Aspiring Smart Contract Developer | Learning Solidity & Web3
Building daily • #100DaysOfCode
Future Blockchain Engineer

[Ralph-Chris @ORalpael]

@Palakonweb Why don't you like revealing your face when you post 😏

[Ralph-Chris @ORalpael]

Day16/100 of learning solidity

Using this environment feels more professional than using remix

We're there gradually

#100DaysOfCode #Solidity #Web3

[Ralph-Chris @ORalpael]

Day15/100 of learning solidity

Today, I learned how to compile smart contract and deploy them to a testnet / live block chain using foundry toolchain.

I was kind of confused at first
but now, after spending hours on it I fully understand how everything works

#web3 #foundry

[Ralph-Chris @ORalpael]

Day15/100 of learning solidity

Today, I learned how to compile smart contract and deploy them to a testnet / live block chain using foundry toolchain.

I was kind of confused at first
but now, after spending hours on it I fully understand how everything works

#web3 #foundry

[Ralph-Chris @ORalpael]

This is what our terminal should look like after successfully running the above command

[Ralph-Chris @ORalpael]

Day14/100 of learning solidity

Today I switched from using REMIX IDE to using VISUAL STUDIO CODE for writing my smart contract.

Here are the steps I took in setting it up 👇
#100DaysOfCode #Solidity #Web3

[Ralph-Chris @ORalpael]

Day 13/100 of learning Solidity

Today I learned how to build a refund function in a crowdfunding smart contract.

Here’s what I learned 👇
#100DaysOfCode #Solidity #Web3

[Ralph-Chris @ORalpael]

We will need to set Ubuntu as default for easy access

Wsl --set-default Ubuntu

After running this command, Ubuntu will set as default anytime you run wsl on you terminal

[Ralph-Chris @ORalpael]

It will require you to provide a username and password after installing successfully

Type this command to confirm that Ubuntu has been installed successfully

wsl --list --verbose

[Ralph-Chris @ORalpael]

Next thing to do is installing Ubuntu

( Ubuntu is a type of wsl distro created to run on windows without the need of traditional virtual machine or dual-boot setup)

Type this command in your terminal

Wsl --install -d Ubuntu

[Ralph-Chris @ORalpael]

To confirm that wsl has successfully installed on your computer, type this command

Wsl --version

Should should see something similar to this

[Ralph-Chris @ORalpael]

2. Then type this command on your terminal
Winget install wsl

Wsl stands for windows sub system for Linux, and it's the environment we will be using to write our code

[Ralph-Chris @ORalpael]

Go to your Windows Search box and type terminal, right click on it and run as admin

[Ralph-Chris @ORalpael]

6. Finally, I used an event:
Refunded(address indexed funder, uint256 amount)
This helps track refunds on-chain and makes the contract more transparent.

[Ralph-Chris @ORalpael]

Day 13/100 of learning Solidity

Today I learned how to build a refund function in a crowdfunding smart contract.

Here’s what I learned 👇
#100DaysOfCode #Solidity #Web3

[Ralph-Chris @ORalpael]

Day 12/100 of learning Solidity
Today I learned about receive() and fallback() functions — and how contracts handle direct ETH transfers.
Here’s what I learned 👇
#100DaysOfCode #Solidity #Web3

[Ralph-Chris @ORalpael]

5. I also learned the importance of checking success:
If the transfer fails → revert the transaction
This prevents silent failures.

[Ralph-Chris @ORalpael]

4. Then comes the actual refund logic
Using:
call{value: amount}("")
This sends ETH back to the user safely and flexibly.

[Ralph-Chris @ORalpael]

3. Next, I verify the user actually funded the contract:
Check how much they contributed
If it’s 0 → transaction fails
No free money here 😄

[Ralph-Chris @ORalpael]

2. The contract ensures the goal hasn’t been met:
If balance ≥ goal → no refunds
If balance < goal → refunds allowed

[Ralph-Chris @ORalpael]

1. I implemented a refund() function that allows users to get their ETH back if the funding goal is NOT reached.
This is important for trust in crowdfunding dApps.

[Ralph-Chris @ORalpael]

Understanding how contracts handle ETH transfers is key for building secure and flexible dApps.

[Ralph-Chris @ORalpael]

Day 12/100 of learning Solidity
Today I learned about receive() and fallback() functions — and how contracts handle direct ETH transfers.
Here’s what I learned 👇
#100DaysOfCode #Solidity #Web3

[Ralph-Chris @ORalpael]

Day 11/100 of learning Solidity

Today I learned about modifiers and how to restrict access in smart contracts.

I’ll be explaining step by step below 👇

#100DaysOfCode #Solidity #Web3

[Ralph-Chris @ORalpael]

4. In my code, both receive() and fallback() call:
fundcontract();
This means anytime ETH is sent (with or without data), the contract automatically executes my funding logic.