🆘10 LUCKY WINNERS 🆘 💰FOLLOW 💰LIKE 💰RETWEET ETHEREUM WALLET

To celebrate the #SynFuturesV2 testnet is now open to everyone, we’re launching the Testnet Reward Campaign for our users! 😉 Make transactions on the testnet and provide feedback, and win #USDC and #NFT rewards! 💰 Read on for details👇 medium.com/@synfutures/sy…

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New airdrop: MobiPad Round2 (MBP) Total Reward: 110,000 MBP Rate: ⭐️⭐️⭐️⭐️ Winners: 5,000 Random & Top 200 Distribution: within 2 weeks after the listing Bot Airdrop Link: t.me/Mobipadbot #Airdrop #Airdrops #Airdropinspector #BSC #MobiPad #MBP #Crypto #Bitcoin

Are you Ready for MobiPad Launch 🚀🚀 #Mobipad will conduct a Fair Launch among communities! This means investors decide listing price and amount Raised! Let's Show how a community and Launchpad should be! #mobipad #dks #FairLaunch #partnership

cool project

cool project

JUMPERS 🫵 ROUND #3 IS HERE 🎉 Round #3 of the Jump DeFi Testnet Beta is LIVE📈 Earn $JUMP for participating in the Jump Beta 💰 Click the link below to sign up for the Beta and follow the instructions to earn your JUMP reward 🙌 forms.gle/5xDVnidbeSg82E… beta.jumpdefi.xyz

I'm excited about the @Shardeum Liberty alphanet! #Shardeum is building an EVM-based L1 that can deliver low gas fees forever by adding more nodes. Requesting 100 #SHM from the Shardeum faucet. faucet.liberty10.shardeum.org My address is: 0x44185e31eAF59246FB407f7B59751DB168e8ACA7

I'm excited about the @Shardeum Liberty alphanet! #Shardeum is building an EVM-based L1 that can deliver low gas fees forever by adding more nodes. Requesting 100 #SHM from the Shardeum faucet. faucet.liberty20.shardeum.org My address is: 0x44185e31eAF59246FB407f7B59751DB168e8ACA7

用extcodesize检查EOA或CA时，如果CA的代码逻辑都在constructor内进行，那么源代码长度为0，也无法判断地址类型，用tx.origin判断也会产生一些新问题，目前还没发现比较好的防御方式🤣

Gas optimization: calldata is cheaper than memory, when calldata is used, the value stored in it can’t be mutated during the function execution, if you only need to read the data, you can save some gas by storing it in calldata

a.Were there any state changes before the external call? b. Is there data that will be read after the call that you can manipulate? c. Is there data that was read before the call and is updated after the call? 4. Can you take advantage of it?

ERC20的approve()可能会导致race condition，A先允许B花费n个token，之后A想调整额度为m时，B可以加gas提前把n转移，再获得m额度，A付出了n+m，可以使用safeERC20里的safeIncreaseAllowance()和safeDecreaseAllowance()来阻止race condition

Solidity calldata note: The data stored in the calldata is immutable, one good way to think about the difference between calldata and memory and how they should be used is that calldata is allocated by the caller, while memory is allocated by the callee

Samczsun workshop guidelines for writing solidity

Defi Details: Synthetix Staking Reward formula

Just claimed my BeWater Genesis Badge for developers and designers! Join me and get your badge now! claim.bewater.xyz/?q=cmFuaz0wMDI… #BeWaterSBT

🎉Thanks @traitsnipergame 💎Wow, my Twitter account is worth a fortune! How about yours? 🔗 Claim your airdrop $TS here 👉 traitsniper.com/airdrop?u=6IfH… #Traitsniper #TS #QRL8FJKY

🎉Thanks @traitsnipergame 💎Wow, my Twitter account is worth a fortune! How about yours? 🔗 Claim your airdrop $TS here 👉 traitsniper.com/airdrop?u=6IfH… #Traitsniper #TS #N9XBK199