EIP 1884 is set to be implemented into the upcoming Ethereum 'Istanbul' hard fork. It
SLOAD from 200 to 800 gasBALANCE and EXTCODEHASH from 400 to 700 gasSELFBALANCE with cost 5.
| #!/usr/bin/lua | |
| -- Metrics web server (0.1) | |
| -- Copyright (c) 2015 Kevin Lyda | |
| -- Apache 2.0 License | |
| socket = require("socket") | |
| netsubstat = {"IcmpMsg", "Icmp", "IpExt", "Ip", "TcpExt", "Tcp", "UdpLite", "Udp"} | |
| cpu_mode = {"user", "nice", "system", "idle", "iowait", "irq", | |
| "softirq", "steal", "guest", "guest_nice"} | |
| netdevsubstat = {"receive_bytes", "receive_packets", "receive_errs", |
| pragma solidity ^0.5.11; | |
| /* | |
| * @author Agustin Aguilar <@agusx1211> | |
| */ | |
| library ChunkStorage { | |
| struct Storage { | |
| mapping(bytes32 => address) slots; | |
| } |
| ``` | |
| // This code snippet shows how an external function can use a pattern like | |
| // python's `try..except..else` with `.call`, `throw`, and reentry | |
| contract TryExceptElsePatternUser { | |
| address _sender; | |
| function tryExceptElsePatternExample() | |
| external // must be external | |
| { | |
| if( msg.sender == address(this) ) { |
| #config | |
| minProf= .001 #min profit for alert in BTC/Day | |
| slowAlertTimer = 300 #min time for slow alert in seconds | |
| offTimer = 0 #min time of off alert in seconds | |
| btcAddress = "address goes here" #niceHash BTC address to monitor | |
| iftttKey = "key goes here" #key from IFTTT Maker applet |
| pragma solidity ^0.4.2; | |
| contract ethernalSale { | |
| struct order { | |
| uint amount; | |
| address buyer; | |
| } | |
| mapping (uint => order) orderBook; | |
| mapping (address => uint) balanceOf; |
| // 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 Jordi Baylina for this way of deploying contracts https://gist.github.com/jbaylina/e8ac19b8e7478fd10cf0363ad1a5a4b3 | |
| // Forwarder is slightly modified to only return 256 bytes (8 normal returns) | |
| // Deployed Factory in Kovan: https://kovan.etherscan.io/address/0xaebc118657099e2110c90494f48b3d21329b23eb | |
| // Example of a Forwarder deploy using the Factory: https://kovan.etherscan.io/tx/0xe995dd023c8336685cb819313d933ae8938009f9c8c0e1af6c57b8be06986957 | |
| // Just 66349 gas per contract |
| /*** | |
| * 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 |
| #import asyncio | |
| import logging | |
| from flask import Blueprint, Flask, request, render_template, g | |
| from flask_graphql import GraphQLView | |
| from google.cloud import logging as glogging | |
| #from graphql.execution.executors.asyncio import AsyncioExecutor | |
| from web3 import Web3, HTTPProvider | |
| from werkzeug.serving import run_simple | |
| from graphql import ( | |
| graphql, |