elzup’s gists

elzup / useFitty.ts

Created June 14, 2021 09:45

fitty for react

	import { useEffect, useRef } from 'react'
	import fitty from 'fitty'

	export function useFitty() {
	const ref = useRef<HTMLDivElement>(null)

	useEffect(() => {
	if (!ref.current) return
	fitty(ref.current)
	ref.current.addEventListener('fit', (e) => {

elzup / perrin-prime-check.ts

Created November 6, 2020 06:10

	// perrin(n) / n === 0
	// =
	// isPrime(n)

	const perrinMemo: [bigint, bigint, bigint] = [0n, 2n, 3n]
	const primeMemo: number[] = [2, 3]

	function perrinNext(): bigint {
	const next = perrinMemo[0] + perrinMemo[1]
	perrinMemo[0] = perrinMemo[1]

elzup / make_badge.sh

Created March 9, 2020 01:32

	#!/bin/bash

	# this script dependence "pup", "jq"
	USERNAME=$1

	SELECTOR='tr:nth-child(2) span:nth-child(1) json{}'
	USERDATA=$(curl -s https://atcoder.jp/users/$USERNAME \|pup $SELECTOR)
	COLOR=$(echo $USERDATA \|jq --raw-output ".[0].class" \|sed 's/user-//')
	RATE=$(echo $USERDATA \|jq --raw-output ".[0].text")

elzup / package.json

Created March 9, 2020 01:31

	{
	"name": "competitive-pg-wrokspace",
	"version": "1.0.0",
	"main": "index.js",
	"author": "elzup <[email protected]>",
	"license": "MIT",
	"devDependencies": {
	"@types/node": "^13.5.3",
	"atcoder-cli": "^2.0.4",
	"eslint": "^6.8.0",

elzup / make_badge.sh

Last active March 9, 2020 01:36

create atcoder badge. (ex. `./make_badge.sh anozon`

	#!/bin/bash

	# this script dependence "pup", "jq"
	USERNAME=$1

	SELECTOR='tr:nth-child(2) span:nth-child(1) json{}'
	USERDATA=$(curl -s https://atcoder.jp/users/$USERNAME \|pup $SELECTOR)
	COLOR=$(echo $USERDATA \|jq --raw-output ".[0].class" \|sed 's/user-//')
	RATE=$(echo $USERDATA \|jq --raw-output ".[0].text")

elzup / 0->100 arrow functions

Last active May 22, 2023 17:02

Goal: 100 Arrow functions, Anonymous function, lambda, closure example.

elzup / day-changed.js

Created February 25, 2020 02:29

Run setTimeout at become tomorrow

	const nextDay = () => new Date().setHours(0, 0, 0, 0) + 24 * 60 * 60 * 1000
	const tommorowFromNow = () => nextDay() - new Date()

	setTimeout(() => {
	// code
	}, tommorowFromNow())

elzup / _app.tsx

Last active July 5, 2023 12:42

Next.js with typescript minimum pages/_document.tsx, pages/_app.tsx

	import { AppProps } from 'next/app'
	import Head from 'next/head'

	const App = ({ Component, pageProps }: AppProps) => (
	<>
	<Head>
	<meta
	name="viewport"
	content="width=device-width, initial-scale=1, shrink-to-fit=no"
	/>

elzup / cdr-recent-dirs-clean.sh

Created January 21, 2020 09:19

clean no exists directories

elzup / functions_index.js

Last active January 9, 2020 01:30

Cloud Functions から Firebase Cloud Messaging を呼び出す最小構成

	import * as functions from 'firebase-functions'
	import * as admin from 'firebase-admin'

	admin.initializeApp({
	credential: admin.credential.applicationDefault(),
	// databaseURL: 'https://hoge.firebaseio.com/',
	})

	export const api = functions.https.onRequest(async (req, res) => {
	const message = {

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