Skip to content

Instantly share code, notes, and snippets.

View shanev's full-sized avatar
💭
#BUIDL

shane.stars shanev

💭
#BUIDL
View GitHub Profile
@simonmichael
simonmichael / 2016.journal
Created April 14, 2017 00:38
renaming hledger accounts for tax reporting
; align business expenses with IRS Schedule C categories:
; Advertising
; Business Travel
; Commissions
; Communication
; Contract Labor
; Insurance Payments
; Interest Payments
; Legal and Professional Fees
; Meals and Entertainment
import Foundation
#if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
extension Data {
init(referencing data: DispatchData) {
self = (data as AnyObject) as! Data
}
@lattner
lattner / TaskConcurrencyManifesto.md
Last active April 29, 2025 02:59
Swift Concurrency Manifesto
@FelicianoTech
FelicianoTech / gist:56ad8f63156e233e6a16df50fe6d4791
Created August 22, 2017 23:02
Using AWS ECR with CircleCI 2.0 (docker executor)
version: 2
jobs:
build:
docker:
- image: circleci/openjdk:8-jdk
steps:
- checkout
- setup_remote_docker
- run:
name: install aws
@raineorshine
raineorshine / sendRawTransaction.js
Last active December 3, 2022 18:02
Sends a raw transaction with web3 v1.2.2, ethereumjs-tx v2.1.1, and Infura
const Web3 = require('web3')
const Tx = require('ethereumjs-tx').Transaction
// connect to Infura node
const web3 = new Web3(new Web3.providers.HttpProvider('https://mainnet.infura.io/INFURA_KEY'))
// the address that will send the test transaction
const addressFrom = '0x1889EF49cDBaad420EB4D6f04066CA4093088Bbd'
const privateKey = new Buffer('PRIVATE_KEY', 'hex')
@GNSPS
GNSPS / ProxyFactory.sol
Last active December 11, 2024 21:58
Improved `delegatecall` proxy contract factory (Solidity) [v0.0.5]
/***
* Shoutouts:
*
* Bytecode origin https://www.reddit.com/r/ethereum/comments/6ic49q/any_assembly_programmers_willing_to_write_a/dj5ceuw/
* Modified version of Vitalik's https://www.reddit.com/r/ethereum/comments/6c1jui/delegatecall_forwarders_how_to_save_5098_on/
* Credits to Jorge Izquierdo (@izqui) for coming up with this design here: https://gist.github.com/izqui/7f904443e6d19c1ab52ec7f5ad46b3a8
* Credits to Stefan George (@Georgi87) for inspiration for many of the improvements from Gnosis Safe: https://github.com/gnosis/gnosis-safe-contracts
*
* This version has many improvements over the original @izqui's library like using REVERT instead of THROWing on failed calls.
* It also implements the awesome design pattern for initializing code as seen in Gnosis Safe Factory: https://github.com/gnosis/gnosis-safe-contracts/blob/master/contracts/ProxyFactory.sol
@alex-miller-0
alex-miller-0 / eth-utxo.md
Last active February 3, 2024 15:20
UTXO tokens on Ethereum

Suppose we wish to model a UTXO system on the EVM. We need to represent UTXO tokens such that all value is preserved when tokens are spent. Note: For this example, we are not concerned about the security of the system and are satisfied with giving authorities the power to create tokens (e.g. as in a plasma system).

Consider the following object:

{
  owner: <address>,
  value: <uint>,
@maurelian
maurelian / UtxoToken.sol
Last active December 23, 2022 21:26
UTXO Token
pragma solidity ^0.4.10;
// Based on Alex Miller's design, with minor revisions to appease the compiler, and incorporate Christian Lundkvist's
// input about hash collisions.
contract Bitcoin {
struct UTXO {
address owner;
uint value;
@knarz
knarz / Dockerfile
Last active April 22, 2022 20:18
cosmos testnet dockerfile
# vi: set ft=dockerfile :
# example usage
# docker build -t cosmos .
# docker run -d -v cosmos-data:/opt/cosmos --rm -ti --name cosmos-1 cosmos
# docker exec -it cosmos-1 sh
# /go/bin/basecli --home $BASECOIN_HOME keys add default
# /go/bin/gaiad --home $GAIAD_HOME show_validator
FROM golang:1-alpine
RUN apk add --no-cache git make
@amiller
amiller / TinyDuplex.sol
Last active May 13, 2019 20:38
TinyDuplex.sol: minimalist duplex micropayment channel for Ethereum
pragma solidity ^0.4.22;
// ECE 398 SC - Smart Contracts and Blockchain Security
// http://soc1024.ece.illinois.edu/teaching/ece398sc/spring2018/
// Simpest possible duplex-micropayment channel
// - Funded with an up front amount at initialization
// - The contract creator is called "alice". The other party, "bob", is passed
// as an argument to the Constructor
// - There is no fixed deadline, but instead any party can initiate a dispute,
// which lasts for a fixed time