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Ethereum Output operations and decoding of operations
The Ethereum intelligent contract platform allows developers to interact with decentralized programs (APPS) using a programming language called Solid. You can call your accounts to get data or calculate during the creation of an intellectual contract. In this article, we will examine how to decipher the output of the first call and use it to send the operation.
Understanding of the output of operations
When called the function on the Ethereum account, the result is generally presented in hexadecimal format, which shows the surgery bag. The hexagonal value can be converted into a read person using a variety of tools. Here are some of the usual ways to decipher the output:
- Use `
Eth.acCouns.hex '(in the console) to obtain the operational ID
- USAWeb3.eth.gettransationrecypt ()
, then ‘Operational.Rawtransation’ to obtain a reception object
Shipping Shipping
You will have to create the implementation of the contract signed using the following steps to send an operation:
- Write your strength code in a .Sol extension file
- To insert and install a contract, use an instrument such as truffle or remix
- Sign the installation of a contract with your personal key
After installation, you can call the account display features to which contracts belong using the following syntax:
`Solidariety
Contractual exam expert {
Hello () Pure Pura Returns (String Memory) function {
Back "Hi, World!";
}
}
Gethash function (address) Return public image (byte memory) {
// Let's say,
Bytes Memory TXID = Contraction.Rawtransation [0] .hex;
// Now you can use the operational ID to decipher the first call output
String Memory Bag = txid.split ("") [1];
return the bag;
}
In this example, suppose that we have the address of the addresses based on their appropriate operational ID. So we use this map to scan the hexadecimal value that reflects the surgery bag.
Send x Wei
To send address x Wei you will have to create a contractual installation signed using the following syntax:
Solidariety
Contract with MyContract {
Sendwei function (recipient address, Uint256) pure pure pure return (bool) {
Request (amount> 0, "the amount must be positive");
// signs the operation with the personal key
Bytes32 signature = kecak256 (both.encodepacked (
Msg.sender,
amount
Block.timestamp
))););
// signs the installation of a contract with the personal key and add a new operation
Operation = (MSG.Sender, recipient, 0, Blockhash, Blocknumber, Nerl, 0, signature);
}
}
`
In this example, suppose that we have the address of the addresses based on their appropriate operational ID. So we use this map to scan the hexadecimal value that reflects the operating bag and sign the installation of the contract using the private key.
tools
Here are some popular tools to work with Ethereum:
- [Triufel] (
- [Remix] (
- [Etherscan] (
- [Web3.js] (
