Ko Sunghun kosunghun317

Rust 공부하는법

2022년 9월 5일 양준하

왜 Rust를 배워야 하는가?

2021년 4분기 기준 Github 점유율 15위 언어
C++ 암살자 포지션 (개인적으로 10년안에 C++ 넘어설 듯)
블록체인, 임베디드, 시스템프로그래밍, 서버, 분산처리, WASM 등에서 활발히 사용되는 고성능 언어
모던하고 깔끔한 언어 디자인, 훌륭한 개발툴과 패키지 매니저
수준높은 사용자들과 커뮤니티, 독보적인 UX를 기반으로 한 철옹성 같은 팬덤들

Upgrade to at least 0.8.4

Using newer compiler versions and the optimizer gives gas optimizations and additional safety checks for free!

The advantages of versions 0.8.* over <0.8.0 are:

Safemath by default from 0.8.0 (can be more gas efficient than some library based safemath).
Low level inliner from 0.8.2, leads to cheaper runtime gas. Especially relevant when the contract has small functions. For

Calldata Optimisation

Reducing gas costs for L2 users by optimising calldata.

Motivation

Transaction fees on L2s like Optimism and Arbitrum involve paying the calldata gas costs for the batch submission on L1. And it accounts for good amount of gas fees.

For example, breakup of $4.19 Uniswap Trade on Arbitrum (explorer):

https://web.archive.org/web/20110219163448/http://howtohft.wordpress.com/2011/02/15/how-to-build-a-fast-limit-order-book/

The response to my first few posts has been much larger than I’d imagined and I’d like to thank everyone for the encouragement.

If you’re interested in building a trading system I recommend first reading my previous post on general ideas to keep in mind.

My first really technical post will be on how to build a limit order book, probably the single most important component of a trading system. Because the data structure chosen to represent the limit order book will be the primary source of market information for trading models, it is important to make it both absolutely correct and extremely fast.

To give some idea of the data volumes, the Nasdaq TotalView ITCH feed, which is every event in every instrument traded on the Nasdaq, can have data rates of 20+ gigabytes/day with spikes of 3 megabytes/second or more. The individual messages average about 20 bytes each so this means handling


	def processing_execution(data_dic_one):
	leaves_qty = dic_json.get('leaves_qty')
	if leaves_qty > 0 :
	return

	## 여기 이하 전량체결 이벤트일 때 수행됨.

	## 봇에서 주문 낸 지정가 주문(지정가 의도했으나 시장가 체결된것 포함) 이 전량체결 시점임.
	_symbol = dic_json.get('symbol')

	const { ethers } = require("ethers");
	const axios = require('axios').default;
	require('dotenv').config();

	/////////////////////////
	// EDIT THESE VALUES //
	/////////////////////////
	const makers = [
	"0xFA62E6eFEc39b4Dc5E3f37D676F18B560f7dD458"
	];





	################ bybit WebSocket example. USDT perpetual ETHUSDT


	import asyncio
	import websockets
	import json

	import socket
	import asyncio
	import websockets
	import time
	import logging
	import argparse
	import threading
	import sys

	package bellmanford

	import (
	"math"
	)

	// Graph represents a graph consisting of edges and vertices
	type Graph struct {
	edges []*Edge
	vertices []uint