hungdoansy

Summary

eth_estimateGas failed, eth_call (to simulate) failed but tx succeeded 🤷

eth_estimateGas (to estimate gas)

[
    {
        "jsonrpc": "2.0",
        "id": 9,

hungdoansy

// Source: https://stackoverflow.com/a/2450976/6812545

const shuffle = <T>(array: T[]): T[] => {
  let currentIndex = array.length, randomIndex;

  // While there remain elements to shuffle.
  while (currentIndex != 0) {

    // Pick a remaining element.
    randomIndex = Math.floor(Math.random() * currentIndex);

hungdoansy

Nọ đội Dwarves Foundation mới đăng 1 bài viết về cấu trúc cũng như các thư viện họ dùng trong các dự án React. Có 1 cái khá thú vị là họ bảo éo thèm chơi state management lib, ví dụ như Redux, mà chỉ cần dùng Context là đủ. Bất ngờ vãi nồi. Hệ thống lớn mà ko có thằng như Redux thì phải tự optimize re-renders bằng tay. Xong hoá ra có lý do cả, họ dùng mấy thằng lib ở bên dưới đây. Cái danh sách này có thêm 1-2 cái của cùng tác giả, tiện em viết luôn.

1. https://github.com/dai-shi/use-context-selector Khi mình có 1 context, ví dụ như:

const contextValue = {
  count: 0,
  text: "hehe"

hungdoansy

File package.json

    {
    "main": "index.js",
    "script": {
        "build": "babel src -d build --copy-files",
        "start": "rm -rf build && yarn build && node build/index.js"
    },
 "dependencies": {

hungdoansy

FROM nginx
COPY ./nginx.conf /etc/nginx/conf.d/default.conf

hungdoansy

Renew GPG key

Given that your key has expired.

$ gpg --list-keys
$ gpg --edit-key KEYID

Use the expire command to set a new expire date:

hungdoansy

// Example of using ethers.js to interact with a smart contract
// Call a contract method at a specific block
// This example is to get rate of a token at a block

import { ethers } from "ethers"
import BigNumber from "bignumber.js"

// prettier-ignore
const oracleABI = '[{"inputs":[{"internalType":"contract MultiWrapper","name":"_multiWrapper","type":"address"},{"internalType":"contract IOracle[]","name":"existingOracles","type":"address[]"},{"internalType":"enum OffchainOracle.OracleType[]","name":"oracleTypes","type":"uint8[]"},{"internalType":"contract IERC20[]","name":"existingConnectors","type":"address[]"},{"internalType":"contract IERC20","name":"wBase","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"contract IERC20","name":"connector","type":"address"}],"name":"ConnectorAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"contract IERC20","name":"connector","type":"address"}],"name":"

hungdoansy

package main

import (
	"fmt"
	"golang.org/x/text/runes"
	"golang.org/x/text/transform"
	"golang.org/x/text/unicode/norm"
	"strings"
	"unicode"
)

hungdoansy

Deploy Subgraph guide (on hosted service)

1. Go to https://thegraph.com/hosted-service/, register a new account using your Github account
2. Go to https://thegraph.com/hosted-service/dashboard, -> Add Subgraph, then fill the information. Use: Test Uniswap Graph for name
3. Grab your subgraph id. If it is https://thegraph.com/hosted-service/subgraph/hungdoansy/uniswap-v2-experiment, grab hungdoansy/uniswap-v2-experiment
4. Clone an example repo or create a new one from CLI git clone [email protected]:hungdoansy/test-the-graph.git test-uniswap-graph
5. cd test-uniswap-graph
6. yarn to install all dependencies

hungdoansy

console.log(`Built time: %c${new Date(Number(process.env.REACT_APP_BUILT_TIME) * 1000)}`, "color: #bada55");