axic

//
// The new assembly support in Solidity makes writing helpers easy.
// Many have complained how complex it is to use `ecrecover`, especially in conjunction
// with the `eth_sign` RPC call. Here is a helper, which makes that a matter of a single call.
//
// Sample input parameters:
// (with v=0)
// "0x47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad",
// "0xaca7da997ad177f040240cdccf6905b71ab16b74434388c3a72f34fd25d6439346b2bac274ff29b48b3ea6e2d04c1336eaceafda3c53ab483fc3ff12fac3ebf200",
// "0x0e5cb767cce09a7f3ca594df118aa519be5e2b5a"

Arachnid

/**
 * Base contract that all upgradeable contracts should use.
 * 
 * Contracts implementing this interface are all called using delegatecall from
 * a dispatcher. As a result, the _sizes and _dest variables are shared with the
 * dispatcher contract, which allows the called contract to update these at will.
 * 
 * _sizes is a map of function signatures to return value sizes. Due to EVM
 * limitations, these need to be populated by the target contract, so the
 * dispatcher knows how many bytes of data to return from called functions.

timvisee

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

• There are always 24 hours in a day.
• February is always 28 days long.
• Any 24-hour period will always begin and end in the same day (or week, or month).

dsample

ASCI art characters for creating diagrams

Characters:

Single line

• ASCII code 191 = ┐ ( Box drawing character single line upper right corner )
• ASCII code 192 = └ ( Box drawing character single line lower left corner )
• ASCII code 193 = ┴ ( Box drawing character single line horizontal and up )
• ASCII code 194 = ┬ ( Box drawing character single line horizontal down )

fiveoutofnine

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract HeapSort {
    function sort(uint256[] calldata _input) external pure returns (uint256[] memory) {
        _buildMaxHeap(_input);

        uint256 length = _input.length;
        unchecked {
            for (uint256 i = length - 1; i > 0; --i) {

Saw-mon-and-Natalie

# ▇ => ▇ + ▇
# Minimal runtime bytecode for a contract that mutates 
# into two child contracts and then self-destructs
# 1st child contract receives the call value
# 2nd child contract recevies the remaining balance
# author: Saw-mon and Natalie

# constructor payload for the spawned contract
 
#       ┏━━━━━━━━━━━━━━━━━━━ push1 RUNTIME_BYTECODE_LEN         # L

vicnaum

Translate EVM bytecode into opcodes using pure Regex :)

Demo: https://twitter.com/0x796/status/1608039943582142464

Try here: https://regex101.com/

Use PCRE2 (Perl compatible) Regex flavor.

Search:

0age

[
  {
    "inputs": [],
    "name": "CannotDeriveProofForSingleTokenId",
    "type": "error"
  },
  {
    "inputs": [],
    "name": "CannotDeriveRootForSingleTokenId",
    "type": "error"

coffeexcoin

FROM nvidia/opencl
SHELL ["/bin/bash", "-c"]
RUN apt update
RUN apt install -y build-essential ocl-icd-opencl-dev git curl
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | bash -s -- -y
RUN git clone --depth 1 https://github.com/0age/create2crunch
WORKDIR /create2crunch
RUN source $HOME/.cargo/env && cargo build --release

#Keyless Create2

samczsun

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