solidity
@jamco.eth
TIL* Polygon POS (and their testnet attempted here) only support up to paris evm version... so still no PUSH0 or compatibility with solidity >= 0.8.20
any good place to get a breakdown of chains and their latest version? L2 Beat didn't show this
* or at least re-learned, was more aware of this before but haven't run into it in a long time
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@tbsocialist
Introducing Gas Killer: Super Scaling Ethereum Computation
Reach out through the form in the article if you'd like to try testing it out!
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@rosarioborgesi
⚡ abi.encode vs abi.encodePacked in Solidity
Both encode data, but there’s a key difference:
🔹abi.encode → adds padding (less gas efficient)
🔹abi.encodePacked → no padding (more compact, cheaper in gas)
⚡ For gas efficiency → prefer abi.encodePacked
🔎 For strict decoding → use abi.encode
Example 👇
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@rosarioborgesi
❌ In Solidity, you cannot use == to compare two strings.
Strings are complex types (dynamic byte arrays), so == won’t work like it does with primitives.
✅ The correct way is to compare their hashes 👇
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@rosarioborgesi
🚀 Using Foundry’s cast send to call smart contracts right from the CLI
For the @CyfrinUpdraft Foundry Fundamentals Section 1 NFTs I had to call:
function solveChallenge(string yourFavoriteIceCream, string yourTwitterHandle)
on contract 0x6c4791c3a9E9Bc5449045872Bd1b602d6385E3E1 (Sepolia).
Here’s the cast send command I used 👇
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@rosarioborgesi
Day 24 of Foundry Fundamentals 🚀 with @cyfrin Updraft
✅ Deploy the Lottery on the Testnet pt.1
💡 Pro tip: Always test locally on Anvil before testing on a testnet
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@kompreni
Uniswap LP math strikes again ☠️
I've been writing some LP-creation libraries for farstore. In the end, the only working solution I've come to is to *binary search* the tick ranges onchain with a bunch of fake/test pairs.
The saving grace is cheap gas. This never would have worked as a "solution" on ETH mainnet.
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@apoorvlathey
Solady contracts are 7702 ready 👀
If you decide to change the delegation address for EOA, the storage state isn't cleared
So if you are not careful, then there'll be slot conflicts!
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@nicholas
Contract for Project 2 v0.0.4 revised and deployed to testnet last night.
Time to lock in and revise @crowdfund (Project 1) contract. v0.1.0 deploying very soon.
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@kazani
OpenZeppelin Solidity Contracts v5.3 is here 🧑💻
This release introduces new token standards and governance improvements, along with new smart account and crosschain capabilities through the Community Contracts Library.
Here's what's new 👇
📝 Core Contracts Highlights
ERC-6909 – New multi-token standard with:
• Minimal implementation
• Metadata support
• Supply tracking
• Content URI extension
Governor Improvements:
• New Proposal Guardian role
• Added Sequential Proposal IDs
• New Super Quorum mechanism
❤️🩹 5.3 also packs quality-of-life upgrades such as:
• trySafeTransfer() for ERC20s (no more surprise reverts)
• clear() for EnumerableSet and EnumerableMap
• MerkleTree.update() for dynamic leaf management
• 512-bit and saturating math operations (add512, mul512, etc)
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@jamco.eth
anyone using a solidity extension in cursor? i can't get any (juan blanco, nomic, or solidity extended) to highlight errors.
i've had this happen before, but restarting the extension would fix it for a while until it happened again. now it's just not working at all.
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@ichristwin.eth
😂 what in the footgun is that!
...why would the compiler allow this?? 🙂
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