Tips for efficient, secure contracts in the Solidity Programming Language. Program the World Computer.
Ethereum Blockchain
Joined February 2018
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Solidity Tips retweeted
Final month of drafting for "Mastering Ethereum". If you'd like to contribute, there are tasks for every skill level of contributor.
github.com/ethereumbook/ethe…
github.com/ethereumbook/ethe…
Want to _really_ know Ethereum down to the lowest bits? Read the technical specification! For a gentler introduction than the 'yellow paper' , check out the ' Ethereum beige paper'
buff.ly/2GbbpLz
#ETHEREUM
Solidity Tips retweeted
A bit of positive news for #Ethereum.... teapawt.net/coinbase/status/978345…
We’re excited to announce our intention to support the Ethereum ERC20 technical standard for Coinbase in the coming months.
We are not announcing support for any specific assets today.
blog.coinbase.com/adding-erc…
Solidity Tips retweeted
#Blockchain can get pretty technical, even for our technical writer @micahdameron. He recalls how he first made sense of the #Ethereum Yellow Paper and explains his motives for the Beige Paper––a more approachable version for the larger crypto community. media.consensys.net/rediscov…
For a complete example of events in Solidity, check out this contract:
buff.ly/2GaanP4
#ETHEREUM #smartcontracts
events can have at most three parameters designated as 'indexed'. This allows us to search for these parameter values. It is also possible to filter for specific values via web3.
#ETHEREUM #smartcontracts
events are declared using the 'Event' keyword. Create many different events for debugging, or just to keep an eye on your contracts :)
event Deposit (
address indexed _from,
bytes32 indexed _id,
uint _value
);
#ETHEREUM #smartcontracts
Solidity Tips retweeted
For all assembly fans out there, great read! arvanaghi.com/blog/reversing…
Events are inheritable members of contracts. When emitted, the arguments are stored within the transaction log.
#ETHEREUM #smartcontracts
We can find out how much ether the caller of our contract has by checking 'msg.sender.balance'
#Ethereum #Blockchain #smartcontracts
Solidity Tips retweeted
Too many people are racing to start crypto projects and not enough people are racing to solve actual problems.
Solidity Tips retweeted
New firmware update 1.4.1 available for the Nano S! ledger.fr/2018/03/06/new-fir…
Solidity Tips retweeted
Parents - is your teen texting about price action?
Watch out for these commonly used terms:
LOL - Lots Of Liquidity
WTF - What Time Frame
ASL - Asian Session Lows
LMAO - Lows Made Above Orderblock
STFU - Support Tested From Underneath
ROFL - Retail Orders Forming Lows
Events are defined within the smart contract, and can be emitted when something important happens.
Define:
event LogDepositMade(address accountAddress, uint amount);
Fire within a function:
LogDepositMade(msg.sender, msg.value);
#Ethereum
We all know this! Which is why we strive for safe, secure smart contracts.
technologyreview.com/s/61039…
Solidity Tips retweeted
Woohoo 🙌🏽
What a cool little surprise for a Thursday! Much gratitude and appreciation for you guys.
Keep on #educating🤓🧠🤯
Solidity maps can contain other maps.
"A map to a map" is used within the ERC20 token standard:
mapping(address => mapping (address => uint256)) allowed;
#Ethereum
The winner of our ONE MILLION GWEI retweet contest is @Msanmiguel16 ! Congrats friend, please PM us your details.
Appreciate everyone who participated spreading Solidity knowledge across the Twitterverse 💯🌈🦄