Jimmy Chu jimmychu0807

## string-conversion.rs
use std::str;

fn main() {
  // -- FROM: vec of chars --
  let src1: Vec<char> = vec!['j','{','"','i','m','m','y','"','}'];
  // to String
  let string1: String = src1.iter().collect::<String>();
  // to str
  let str1: &str = &src1.iter().collect::<String>();
  // to vec of byte

## semaphore-v4-ceremony_attestation.log
Hey, I'm jimmychu0807-898091 and I have contributed to the Semaphore V4 Ceremony.
The following are my contribution signatures:

Circuit # 1 (semaphorev4-1)
Contributor # 136
Contribution Hash:
		02b0bc08 ee92a2a8 c030b5fb c2059263
		36c4f5c9 210366d3 044c958d 64fea3f9
		88a4debe a73b7ee5 03e8c38a 1c2bc722
		42b93baa 956c6ca4 e148becf 30491f59

## self-signed-certificate-with-custom-ca.md

      
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                jimmychu0807
                / self-signed-certificate-with-custom-ca.md
            
            
              Created
              November 3, 2020 06:04
                — forked from fntlnz/self-signed-certificate-with-custom-ca.md
            
              
                Self Signed Certificate with Custom Root CA
              
          
    Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!
openssl genrsa -des3 -out rootCA.key 4096

  
## Markdium-javascript.js
useEffect(() => {
  let unsubscribe;
  api.query.templateModule.something(newValue => {
    // The storage value is an Option<u32>
    // So we have to check whether it is None first
    // There is also unwrapOr
    if (newValue.isNone) {
      setCurrentValue('<None>');
    } else {
      setCurrentValue(newValue.unwrap().toNumber());

## Markdium-Shell.bash
# -- 安裝 NodeJS v12 (https://nodejs.org/en/download/),
#   及 yarn 工具 (https://classic.yarnpkg.com/en/docs/install)

# -- 下載 Substrate 前端模版並跑起來
cd ..
git clone https://github.com/substrate-developer-hub/substrate-front-end-template front-end-template
cd front-end-template
yarn install
yarn start

## Markdium-javascript.js
api.tx.my_pallet.dispatch_call(params).signAndSend(accountPair, 回調函數)

## Markdium-JSON.json
{
  "PROVIDER_SOCKET": "ws://<你的 ws/wss 地址>"
}

## Markdium-javascript.js
let unsubscribe;
api.query.templateModule.something(function(val) {
  // 回調函數
  // 在這裡設置 UI 里使用的變量。
}).then(unsub => {
  //取消訂閱函數
  unsubscribe = unsub;
})

## Markdium-javascript.js
import { useSubstrate } from './substrate-lib';
import { TxButton } from './substrate-lib/components';

//...

function main (props) {
  //...
  return (
    <Grid.Column>
      <h1>Template Module</h1>

## Markdium-javascript.js
{
  //外部交易函數
  //  這個參看回 `pallet/template/src/lib.rs` 的名字
  tx: api.tx.<模塊名字>.<extrinsic 名字>
  //外部交易函數的輸入參數數組
  params: [...]
}
	use std::str;

	fn main() {
	// -- FROM: vec of chars --
	let src1: Vec<char> = vec!['j','{','"','i','m','m','y','"','}'];
	// to String
	let string1: String = src1.iter().collect::<String>();
	// to str
	let str1: &str = &src1.iter().collect::<String>();
	// to vec of byte
	Hey, I'm jimmychu0807-898091 and I have contributed to the Semaphore V4 Ceremony.
	The following are my contribution signatures:

	Circuit # 1 (semaphorev4-1)
	Contributor # 136
	Contribution Hash:
	02b0bc08 ee92a2a8 c030b5fb c2059263
	36c4f5c9 210366d3 044c958d 64fea3f9
	88a4debe a73b7ee5 03e8c38a 1c2bc722
	42b93baa 956c6ca4 e148becf 30491f59
	useEffect(() => {
	let unsubscribe;
	api.query.templateModule.something(newValue => {
	// The storage value is an Option<u32>
	// So we have to check whether it is None first
	// There is also unwrapOr
	if (newValue.isNone) {
	setCurrentValue('<None>');
	} else {
	setCurrentValue(newValue.unwrap().toNumber());
	# -- 安裝 NodeJS v12 (https://nodejs.org/en/download/),
	# 及 yarn 工具 (https://classic.yarnpkg.com/en/docs/install)

	# -- 下載 Substrate 前端模版並跑起來
	cd ..
	git clone https://github.com/substrate-developer-hub/substrate-front-end-template front-end-template
	cd front-end-template
	yarn install
	yarn start
	let unsubscribe;
	api.query.templateModule.something(function(val) {
	// 回調函數
	// 在這裡設置 UI 里使用的變量。
	}).then(unsub => {
	//取消訂閱函數
	unsubscribe = unsub;
	})
	import { useSubstrate } from './substrate-lib';
	import { TxButton } from './substrate-lib/components';

	//...

	function main (props) {
	//...
	return (
	<Grid.Column>
	<h1>Template Module</h1>
	{
	//外部交易函數
	// 這個參看回 `pallet/template/src/lib.rs` 的名字
	tx: api.tx.<模塊名字>.<extrinsic 名字>
	//外部交易函數的輸入參數數組
	params: [...]
	}