Top Tweets for #LearningWeb3
Saturday is for research! π Diving deeper into the @CNPYNetwork documentation today. Knowledge + Participation = Success in this space. Stay curious, stay rewarded! ππ‘
#LearningWeb3 #CNPY #Canopy #CryptoResearch
Built an Escrow Smart Contract in Solidity #learningweb3
Features:
1. ETH deposit
2. Delivery confirmation
3. Seller payment release
4. Refund system
5. State management with enum
Learned:
payable, require(), msg.sender, msg.value, call()
code:- https://t.co/L7tcVPmv4h
#Solidity
Built a Crowdfunding Smart Contract in Solidity.
Features:
1. Donate ETH
2. Campaign deadline
3. Goal-based funding
Learned:
mapping, payable, msg.value, block.timestamp, call()
Code available on GitHub:
https://t.co/XDLgyTWgIx
#Solidity #Web3 #Ethereum #Blockchain
Day 34 (Phase 2) #learningweb3
Hashing in Solidity
Same input + same algorithm β same hash
Same input + different algorithms β different hash
keccak256 / sha256 / ripemd160
#Solidity #Web3
Day 33 (Phase 2) #learningweb3
send β 2300 gas + bool
transfer β 2300 gas + auto revert
call β flexible + most used
call is preferred in modern contracts.
#Solidity #Web3
Day 32 (Phase 2) #learningweb3
immutable vs constant
immutable β set in constructor
constant β set at compile time
normal β can change anytime
Gas efficiency matters.
#Solidity #Web3
Day 31 (Phase 2) #learningweb3
receive β ETH (no data)
fallback β data / unknown calls
ETH + data β fallback
Tested behavior in Remix.
#Solidity #Web3
Day 31 (Phase 2) #learningweb3
receive β ETH (no data)
fallback β data / unknown calls
ETH + data β fallback
Tested behavior in Remix.
#Solidity #Web3
Day 30 #learningweb3
Modifiers in Solidity
Reusable logic
Cleaner code
Access control (onlyOwner)
#Solidity #Web3
Day 30 #learningweb3
Modifiers in Solidity
Reusable logic
Cleaner code
Access control (onlyOwner)
#Solidity #Web3
Day 29 #learningweb3
payable in Solidity
Allows sending & receiving ETH
msg.value β ETH sent
1 ETH = 10^18 wei
#Solidity #Web3
Day 29 #learningweb3
payable in Solidity
Allows sending & receiving ETH
msg.value β ETH sent
1 ETH = 10^18 wei
#Solidity #Web3
Day 28 #learningweb3
revert & assert
revert β custom errors + gas efficient
assert β internal checks (should never fail)
Use them wisely for safer contracts.
#Solidity #Web3
If youβre also learning Web3, follow along, letβs figure it out together.
#Web3ββ #CT #learningweb3
Day 28 #learningweb3
revert & assert
revert β custom errors + gas efficient
assert β internal checks (should never fail)
Use them wisely for safer contracts.
#Solidity #Web3
Day 27 #learningweb3
require() = gatekeeper in Solidity
Validates inputs
Reverts on failure
Used for access control
#Solidity #Web3
Day 27 #learningweb3
require() = gatekeeper in Solidity
Validates inputs
Reverts on failure
Used for access control
#Solidity #Web3
Day 26 #learningweb3
Calling parent functions in Solidity.
Direct call β specific parent
super β next in inheritance chain
Execution follows linearization, not intuition.
#Solidity #Web3
Day 25 #learningweb3
Passing constructor params in multiple inheritance.
Execution depends on inheritance order, not constructor order.
B, A β runs as B β A β Child
#Solidity #Web3
Day 24 #learningweb3
Overriding in multiple inheritance.
Same function in multiple parents - must use
override(A, B, C)
Closest override wins.
#Solidity #Web3
Day 21 #learningweb3
Inheritance in Solidity = code reuse + modular design.
Explored overriding with virtual/override and multilevel inheritance.
Key idea: closest override wins.
Smart contracts are starting to feel like real system design.
#Solidity #Web3
Day 20 #learningweb3
Understanding visibility in Solidity: Who can access what
Public, private, internal, and external each define contract interaction and security
Tested inheritance + external calls between contract
This is where smart contract design gets real.
#Solidity #Web3
Day 19 #learningweb3
Leveling up with advanced mappings in Solidity.
Nested mappings = storing multiple data points per user.
This is how real dApps manage complex state.
#Solidity #Web3
Day 18 of my 30-day challenge #learningweb3
Learned about structs in Solidity β a way to group related data into a single unit.
β’ Struct creation
β’ Arrays of structs
β’ memory vs storage
β’ Using constructor with struct
#Solidity #Web3 #30DayChallenge
Day 16 of my 30-day challenge #learningweb3
Today I learned about dynamic bytes in Solidity.
bytes is a dynamic array of byte values that can grow and shrink during execution.
Operations:
push β adds a new byte at the end
pop β removes the last byte
Important:
bytes supports indexing (data[0])
length changes dynamically
more gas efficient than string for low-level operations
Use cases:
data encoding
handling raw binary data
optimization in smart contracts
Extra activity:
Working on SpeedRunEthereum crowdfunding challenge
Day 16 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 15 of my 30-day challenge: #learningweb3
Today I learned about bytes in Solidity.
Bytes is a dynamic array of byte values used to store raw binary data.
Each element in a byte array represents 1 byte (8 bits).
bytes1 to bytes32βfixed-size byte arrays
bytesβdynamic byte array
Example:
function setvalue() public{
temp1 = "abcde";
temp2 = "abcdefghij";
}
Important:
1 byte = 8 bits
1 hexadecimal digit = 4 bits
1 byte = 2 hexadecimal digits (0β9, aβf)
Extra activity:
Started SpeedRunEthereum crowdfunding challenge
Day 15 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 15 of my 30-day challenge: #learningweb3
Today I learned about bytes in Solidity.
Bytes is a dynamic array of byte values used to store raw binary data.
Each element in a byte array represents 1 byte (8 bits).
bytes1 to bytes32βfixed-size byte arrays
bytesβdynamic byte array
Example:
function setvalue() public{
temp1 = "abcde";
temp2 = "abcdefghij";
}
Important:
1 byte = 8 bits
1 hexadecimal digit = 4 bits
1 byte = 2 hexadecimal digits (0β9, aβf)
Extra activity:
Started SpeedRunEthereum crowdfunding challenge
Day 15 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 14 of my 30-day challenge #learningweb3
Today I learned about dynamic arrays in Solidity.
Dynamic arrays can grow and shrink in size during execution.
push β adds a new element at the end of the array
Example:
arr.push(100); //[10,0,30,40,90,80,5,100]
pop β removes the last element of the array
Example:
arr.pop();
Important:
push() increases the array length
pop() decreases the array length
pop() only removes the last element
Extra activity:
Completed SpeedRunEthereum Tokenization challenge
https://t.co/yrIuEgwDMs
Airdrops:
Claimed @ofc_the_club token
Performed swaps on Stabilizer
Day 14 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 14 of my 30-day challenge #learningweb3
Today I learned about dynamic arrays in Solidity.
Dynamic arrays can grow and shrink in size during execution.
push β adds a new element at the end of the array
Example:
arr.push(100); //[10,0,30,40,90,80,5,100]
pop β removes the last element of the array
Example:
arr.pop();
Important:
push() increases the array length
pop() decreases the array length
pop() only removes the last element
Extra activity:
Completed SpeedRunEthereum Tokenization challenge
https://t.co/yrIuEgwDMs
Airdrops:
Claimed @ofc_the_club token
Performed swaps on Stabilizer
Day 14 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 13 of my 30-day challenge #learningweb3
Today I learned about fixed-size arrays in Solidity.
A fixed-size array has a constant length defined at the time of declaration.
Operations:
Get β read values using index
Update β modify value at a specific index
Delete β resets value to default (0), does not remove the element
Length β returns arr.length, which cannot be increased or decreased
Example:
uint[5] public arr = [10, 20, 30, 40, 50];
The size of a fixed array is immutable, so elements cannot be added or removed.
Day 13 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 12 of my 30-day challenge #learningweb3
Today I learned about break and continue statements in Solidity.
These are used to control the flow of loops.
break β stops the loop completely
continue β skips the current iteration and moves to the next one
Example (continue):
for (uint i = 0; i < 10; i += 2) {
if(i == 6){
continue;
}
count += 5;
}
This loop skips when i = 6 and continues execution.
Example (break):
for (uint i = 0; i < 10; i += 2) {
if(i == 6){
break;
}
count += 5;
}
This loop stops completely when i becomes 6.
Important:
Loops should be used carefully in Solidity because they consume gas.
Extra activity:
Started SpeedRunEthereum Tokenization challenge
Airdrops:
β’ Stabilizer β swaps & NFT collection
β’ Nexus β earning points
β’ Shelbynet β working on learning project
Day 12 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 12 of my 30-day challenge #learningweb3
Today I learned about break and continue statements in Solidity.
These are used to control the flow of loops.
break β stops the loop completely
continue β skips the current iteration and moves to the next one
Example (continue):
for (uint i = 0; i < 10; i += 2) {
if(i == 6){
continue;
}
count += 5;
}
This loop skips when i = 6 and continues execution.
Example (break):
for (uint i = 0; i < 10; i += 2) {
if(i == 6){
break;
}
count += 5;
}
This loop stops completely when i becomes 6.
Important:
Loops should be used carefully in Solidity because they consume gas.
Extra activity:
Started SpeedRunEthereum Tokenization challenge
Airdrops:
β’ Stabilizer β swaps & NFT collection
β’ Nexus β earning points
β’ Shelbynet β working on learning project
Day 12 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 11 of my 30-day challenge #learningweb3
Today I learned about loops in Solidity: for loops, while loops, and do-while loops.
Loops are used to execute a block of code multiple times based on a condition.
For loop β used when the number of iterations is known
While loop β runs as long as the condition is true
Do-while loop β runs at least once before checking the condition
Loops consume gas, so using large loops in smart contracts can be expensive and risky.
Example:
for (uint i=0; i<10; i=i+2) {
count = count+5;
}
--Loops run 5 times.
--each time add 5.
--5 Γ 5 = 25
Extra activity:
β’ Stabilizer β swaps & NFT collection
β’ Robinhood β NFT mint
β’ Nexus β earning points
β’ Shelbynet β working on learning project
Day 11 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 11 of my 30-day challenge #learningweb3
Today I learned about loops in Solidity: for loops, while loops, and do-while loops.
Loops are used to execute a block of code multiple times based on a condition.
For loop β used when the number of iterations is known
While loop β runs as long as the condition is true
Do-while loop β runs at least once before checking the condition
Loops consume gas, so using large loops in smart contracts can be expensive and risky.
Example:
for (uint i=0; i<10; i=i+2) {
count = count+5;
}
--Loops run 5 times.
--each time add 5.
--5 Γ 5 = 25
Extra activity:
β’ Stabilizer β swaps & NFT collection
β’ Robinhood β NFT mint
β’ Nexus β earning points
β’ Shelbynet β working on learning project
Day 11 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 10 of my 30-day challenge #learningweb3
Today I learned about the ternary operator in Solidity.
The ternary operator is a shorter way to write if-else conditions in a single line.
Syntax:
condition ? value_if_true : value_if_false;
Example:
function check(uint _x) public pure returns (string memory) {
return _x > 100 ? "greater" : "equal or smaller";
}
This makes the code more readable and efficient for simple conditions.
Day 10 done.
#30DayChallenge #Consistency #Solidity #Web3 #DailyLearning
Day 5 of my 30-day challenge. #learningweb3
Today I learned about different types of functions in Solidity β simple, view, and pure.
View functions read data from the blockchain (state and global variables) without changing anything
Pure functions donβt read or modify any state
Simple functions update state variables
To understand this better, I built and tested a function like:
function simplefun() public{
age = age+20;
If age = 23 - after calling the function - age becomes 43
This helped me see how state actually changes through function calls and why unnecessary changes increase gas cost.
Also continued my Web3 activity:
Stabilizer: swaps and NFT collection
Robinhood: GM and contract interaction
Shelbyverse: uploaded files on decentralized storage
Learning step by step and staying consistent.
Day 5 done.
#30DayChallenge #Consistency #DailyLearning #Accountability
Day 4 of my 30-day challenge. #learningweb3
Today I learned about state, local, and global variables in Solidity.
I built and tested a contract where I used state variables to store data, local variables inside functions for temporary operations, and global variables like msg.sender to track who is interacting with the contract.
This helped me clearly understand how data is stored on-chain vs used temporarily during execution.
this is day 4
#30DayChallenge #Consistency #DailyLearning #Accountability
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