Revert Message Call Revert Require Often you’ll see require used like this: Revert Revert can be used with a string revert(“Unauthorized”) or, better yet: 👆⛽️ Gas Efficient! Assert Use assert with things that should not happen: Hands-on Learn Solidity. Alchemy University.Accessed January 1, 2025https://university.alchemy.com/overview/solidity
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Storing Owner Receive Ether Tip Owner Charity Self Destruct Learn Solidity. Alchemy University.Accessed December 30, 2024https://university.alchemy.com/overview/solidity
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Message Calls 💡 Message calls are actions taken to communicate with a smart contract. 💡 EOA can communicate with a smart contract or a smart contract can communicate with another smart contract. Message Call Breakdown How Do EOAs and Contracts Call Other Contracts? What does that look like? Can any method call receive ether? Only payable methods
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Arguments Increment View Addition Console Log Pure Double Double Overload Learn Solidity. Alchemy University.Accessed October 28, 2024https://university.alchemy.com/overview/solidity
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Function Visibility Function visibility refers to how and where a function can be called from. It defines the scope in which a function can be accessed and whether it is accessible from external users, derived contracts, or only within the contract itself. Four visibility specifiers for functions: Notes:External functions can be called via transactions from
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Variables declared in contract scope are storage variables Solidity stores these in contiguous storage slots Storage is going the most expensive thing that you can do in the smart contract. If you can cut down on the number of storage variables you are using, that will save your user significant money when interacting with your
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Booleans Unsigned Integers Signed Integers String Literals Enum Type Learn Solidity. Alchemy University.Accessed October 7, 2024https://university.alchemy.com/overview/solidity
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Learn Solidity covers the language’s essentials, starting from basic value types like int, uint, and bool, to more complex features such as address interactions, reference types like arrays, structs, and mappings, and applied practices with real-world contract examples and inheritance. Hands-on IDE practice and engaging video content offer immediate feedback, ensuring a comprehensive understanding. This
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Solidity Value Types Value types are types where variables store their data directly in memory. When used in function arguments or assignments, the value of these variables is always copied. This means any changes made to the copied variable do not affect the original variable. Let’s look at a few important types A contract is
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A smart contract is blockchain-deployed code. For example: Deploying a Contract Contract Deployment Opcodes https://ethereum.org/en/developers/docs/evm/opcodesGas is a unit used to measure the computational work required to execute operations on the blockchain. Key Takeaways Transaction Life Cycle 💡 Externally Owned Account (EOA) refers to an account managed by a user through private keys rather than by
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