Questions tagged [rust]
Rust is a language designed for writing highly reliable and fast software in a simple way. It can be used from high-level code down to hardware-specific code, and from big irons to tiny devices.
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Converting between Alloy Primitive and Storage Types
How can we convert, for instance, the Address type from Alloy Primitives into the StorageAddress type from the Stylus crate?
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Is it possible to import foundry anvil in rust?
I successfully installed and used anvil from the wsl shell.
I have some rust code, where i want to import foundry anvil instead of running from shell, cause i want to be able to control it from the ...
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How to run a script in a stylus project
I have a smart contract written with the stylus SDK, and I have a rust script that I've written to interact with it. My file structure looks as such:
.
├── Cargo.lock
├── Cargo.toml
├── Makefile
├── ...
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Run a local stylus node?
Is there a anvil equivalence for stylus?
ie: I want to test my stylus smart contracts against a local stylus node, how would I do that?
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Where is the constructor of a stylus contract defined?
In solidity, I can pick the deployment parameters of my smart contract using the constructor keyword.
constructor( /* params here */) {...}
What is the rust/stylus equivalent of that?
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How to make a test in stylus?
Let's say I have the following stylus contract:
#![cfg_attr(not(feature = "export-abi"), no_main)]
extern crate alloc;
use stylus_sdk::{
alloy_primitives::U256,
prelude::{entrypoint, ...
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1
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17
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Add a key, value pair to a sol mapping in stylus?
In my stylus contract, I have the following sol_storage:
sol_storage! {
#[entrypoint]
pub struct SimpleStorage {
mapping(string => string) name_to_favorite_number;
}
}
And, I ...
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27
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How to make a struct in `sol_storage` layout in `stylus`?
I am attempting to replicate a solidity storage layout in stylus.
It includes a struct, and a list of that struct object:
struct Person {
uint256 favoriteNumber;
string name;
}
...
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1
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32
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Why do I use extern crate for alloc instead of `use std::alloc`?
I'm making a simple storage contract in stylus, but I'm confused as to why I can't import alloc like I can other imports.
I have two kinds of imports
// the extern
extern crate alloc;
// The classic ...
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1
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77
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How to verify a stylus smart contract?
I have deployed the Counter contract to the Stylus testnet. However, looking at verification options, it looks like only Solidity & Vyper is supported.
Is there a way to verify a Stylus (rust-...
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how can i connect to ethereum p2p network without node? [closed]
Is it possible to connect to an Ethereum P2P network without running a node, and if so, how can one accomplish this?
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How do I convert from big endian to little endian types in ethers-rs?
Ethers-rs uses big-endian types when instantiating its I256 type from a raw value with from_raw.
How do you reverse the endianness to get a little endian U256 type?
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Provider does not live long enough
Using ether.rs, I'm trying to listen to multiple steams at the same time. To do this, I have multiple steps:
I first receive the provider address as parameter:
async fn start(
&self,
...
- 101
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Provider error: transaction would cause overdraft: I got this error when deploying to sepolia testnet
require("@nomicfoundation/hardhat-toolbox");
require('dotenv').config();
const { ALCHEMY_SEPOLIA_RPC_URL, WALLET_PRIVATE_KEY } = process.env;
console.log(ALCHEMY_SEPOLIA_RPC_URL);
module....
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1
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Uniswap V2 swap tx - invalid codepoint at offset 22; missing continuation byte
So I have recently been using ethers-rs. I was forking mainnet using anvil, and I tried to front run an uniswap v2 swap. Every time I was trying to frontrun the transaction the frontrun swap was ...
- 233
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Listen to transfer event on any ERC721 compliant contract (ethers.rs)
I am trying to make a program that, given a ERC721 contract address, will listen to all transfer events done on this contract until a certain point. I am not yet very familiar with how Ethereum works, ...
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2
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385
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Compiling...The application panicked (crashed)
If anyone is facing this issue while compiling a smart contract using foundry & getting this error
forge build
[⠃] Compiling...The application panicked (crashed).
Message: ...
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How would you setup a block listener in rust using web3?
I was wondering if it would be possible to have a function that listens to new blocks and checks for a balance update for an account. I believe you need to use the filter builder but not sure how to ...
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1
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347
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How to use fix `forge update` error
When I originally type forge update I get returned this:
Error: fatal: Needed a single revision Unable to find current origin/v1.3.0 revision in submodule path 'lib/forge-std'
After following steps ...
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765
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How to fix decoding transaction data giving wrong output in ethers-rs?
I am trying to decode the hex data of a transaction. For testing purposes I am using the transaction that can be found here https://kovan.etherscan.io/tx/...
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How to handle both String and Bytes return types in Rust
I'm trying to query the MAKER ERC20 contract and get the name and symbol of the token.
The problem is that they are stored as a Bytes and I don't want to change the return type of my function from a ...
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Is Rust used to write smart contract code on Ethereum?
I thought Solidity was the only programming language to write Ethereum smart contracts. Where does Rust come in in the Ethereum developer's toolkit if at all?
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Rust vs Golang, overall for smart contract development
Assuming I do not know anything about these two languages (rust & go), I know rust is being used to write contracts for solana and I do not have much idea of golang, I am thinking of learning one ...
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488
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Foundry remapping error VS Code: foundry config error: stream did not contain valid UTF-8 in Remapping Provider
Im trying to use Foundry with VS Code.
-I removed both the default contract and default test and replaced them with my own .sol file
-I copied over my remapping file into the root directory using the &...
- 21
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0
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255
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When will the 64bit eWasm EVM be launched?
Now with the eth2.0 delay, I can't find out when eWASM will be fully adopted. For some strange reason, the single most important question about eWASM is missing from their FAQ and this change doesn't ...
- 141
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1
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813
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ERC20 Event Listener in Rust Programming
I am trying to program an erc20 event listener using Rust programming language and trying to get events from a particular block to the latest block. But even though I have specified from the block it ...
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1
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168
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Want to import data from firebase realtime database to smart contract writen on solana blockchain
I am making a token on Solana blockchain and want to give the token to certain uses for that I need data from my firebase Realtime database. I am little bit confuse How to get my data on smart ...
- 101
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2
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671
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Is it possible to to deploy a smart-contract written in Solidity, on Solana?
Hope you all are doing great, I code in Solidity and now I have this requirement to convert Solidity code into Rust for Solana.
While figuring out a way I came across with Solang. I'm looking for ...
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355
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Security of Solidity versus Rust
I recently started learning Solidity, and I am interested in security aspects. Today, I encountered a very interesting blog article discussing security vulnerability in Rust. At my level of ...
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How would I make my chain "Metamask compatible"
I'm currently working on a rust blockchain project and we are weeks until minimal test net,
we have CLI wallet and network will support EVM on the real test net. We have rpc api and I would like to ...
- 108
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1
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274
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Major differences between ethers-js and ethers-rs
I haven't used ethers-rs before, are there any extra features there compared to ethers-js.
Learning rust is not an issue here, I'm pretty comfortable with both javascript and rust.
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ERROR Cannot read properties of undefined (reading 'dots')
Error while running npx @substrate/playground-cli
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error[E0282]: type annotations needed
While I was building a subsrate node using cargo build I got this error message.
[
How to solve this??
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1
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How o start code in Solana contract? [closed]
Hello guys try to code in Solana contract, but didnt know how to start it. Will be happy to any advise how to start :)) Thank u :)
May be exist some video course in youtube or something like crypto ...
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What is an EVM externality?
While reading the OpenEthereum codebase, I encountered this type:
/// Externalities interface for EVMs
pub trait Ext {
/// Returns the storage value for a given key if reversion happens on the ...
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1
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523
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How to deploy a contract with Rust?
I'm using Rust with crate web3 0.15.0. (Is there a better library to use?)
My goal is to deploy contracts and call functions in them using programs I've written in Rust.
I have two simple functions, ...
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Rust: Need both events when a transaction is sent and when is confirmed
Rust.
For a method send() of a smart contract I need to process both events when the transaction is sent (and generates txhash) and when it is confirmed.
From https://docs.rs/ethcontract/0.7.2/...
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Plans to migrate go-ethereum to rust-ethereum?
Is anyone planning to migrate go-ethereum to rust-ethereum? Rust with all its features such as zero-cost abstractions, safe memory management, fearless concurrency really outshines Go.
Nathan Aw (...
- 1,924
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798
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Smart Contract Transfer Event Log Data & transfer _value [Rust]
I'd like to have a better understanding of events and logs data, more specifically when it comes to interacting with ERC20 tokens smart contracts and their Transfer events.
I'm looking for a way to ...
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1
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2k
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How to generate public key from private key in Rust?
How to generate Ethereum public key from private key in Rust?
I found rust-secp256k1 and it seems to be what I need, but there is no documentation at all, which makes this crate for me, Rust newbie, ...
- 3,167
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Can paritytech/parity be used as a library the same way that go-ethereum can be used in Go?
The go-ethereum project is divided into a set of standalone libraries that can be used in any Go project (e.g. smart contract interaction, keystore management, common cryptography and hex utils)
Can ...
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How to sign a transaction in Rust
Given a private key, I would like to sign a transaction offline, so it can be sent to a node or Infura without unlocking an account first. I can find many examples in javascript using ethereumjs-tx ...
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Comparing Rust and Solidity hash of big number or hex
I noticed that if I hash ordinary string using Rust and web3.sha3 I would get the same result. But if the number is big number or hex which would necessitate the inclusion of {encoding: 'hex'} as ...
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How to run ethkey under Parity
I want to run ethkey under Parity with this answer.
But when I run the first command cargo build --release -p ethkey --features=ethkey-cli under the parity source folder, it returns:
error: ...
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1k
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Using Rust to call Geth's RPC interface
Given the code below, geth returns:
{"jsonrpc":"2.0","id":"1","error":{"code":-32602,"message":
"json: cannot unmarshal object into Go value of type []interface {}"}}
The code connects to geth, but ...
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Parity installation problem in OSX
During the installation I've got at the end this:
Last 15 lines from /Users/maksim/Library/Logs/Homebrew/parity/02.multirust:
Compiling serde v0.7.4
Compiling itertools v0.4.13
Compiling bytes v0....
