wangzaixiang’s gists

wangzaixiang / SensitiveWordUtil.scala

Last active July 9, 2021 12:59

一个高效的敏感词过滤实现，同时也演示一下 FP 的简洁和强大

	package demo

	import java.lang
	import java.util.regex.Pattern
	import scala.annotation.tailrec
	import scala.collection.{BitSet, mutable}
	import scala.io.Source

	trait SensitiveEngine {

wangzaixiang / LoomTest.scala

Created May 17, 2020 14:12

Loom Test

	import java.lang.management.{ManagementFactory, MemoryUsage}
	import java.util.concurrent.CountDownLatch
	import java.util.concurrent.atomic.AtomicInteger

	object Main {

	def main(args: Array[String]): Unit = {

	Thread.startVirtualThread { () =>
	println(s"Hello ${Thread.currentThread()}")

wangzaixiang / RegExpTest.scala

Created December 10, 2019 02:35

A simple compare for HyperScan and JavaPattern. It looks the Java Pattern is faster than HS. what is the problem?

	import java.util
	import java.util.regex.Pattern

	import com.gliwka.hyperscan.wrapper._

	object Main {

	val regexp = """(?s)\[(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.\d{3})\] \[([^\[\]]+)\] \[([^\[\]]+)\] \[([^\[\]]+)\] - \[(traceId:\|t:)(.) (spanId:\|s:)(-?[A-Fa-f0-9]) (pSpanId:\|p:)(-?[A-Fa-f0-9])] (.)$"""

	val line = "[2019-12-09 14:39:29.298] [INFO] [Logging-Thread-1] [com.yunji.scs.appprice.service.PriceApplicationForAppServiceImpl] - [t: s: p:] log msg"

wangzaixiang / index.html

Created November 13, 2019 13:39

Webcomponent + Shadow DOM performance test

	<meta name="viewport" content="width=device-width">
	<script src="node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js"></script>
	<script type="module" src="my-element.js"></script>
	<script type="module" src="sku.js"></script>

	<script>
	// document.onscroll = function(event){
	// var msg = document.getElementById("msg");
	// // console.info("document scroll " , event);
	// msg.innerHTML = "scroll event: " + event.timeStamp;

wangzaixiang / SelectorDemo.java

Last active November 26, 2017 11:51

这是一个很好的selector例子，也发现了一个bug，当连接一次后， selector会进入不等待死循环。原因是 accept后注册了 OP_CONNECT错误，但这个导致错误返回是否应该算JDK的一个bug呢？

	package com.demo;

	import java.io.IOException;
	import java.net.InetSocketAddress;
	import java.nio.ByteBuffer;
	import java.nio.channels.*;
	import java.util.Iterator;

	/**
	* Created by ever on 2017/11/24.

wangzaixiang / test-webcomponents.html

Created December 8, 2016 07:50

Web Components (V1) Demo


	<!-- only for polyfill
	<script src="custom-elements/src/custom-elements.js"></script>
	-->

	<style>
	body {
	margin: 0;
	}
	/* Style the element from the outside */

wangzaixiang / Plugin.scala

Created December 4, 2016 23:59 — forked from lihaoyi/Plugin.scala

	package demo

	import scala.tools.nsc.io.AbstractFile
	import scala.tools.nsc.{Global, Phase}
	import scala.tools.nsc.plugins.{Plugin, PluginComponent}

	class DemoPlugin(val global: Global) extends Plugin {
	import global._
	override def init(options: List[String], error: String => Unit): Boolean = true

wangzaixiang / mysql-lock-waiting.sh

Created November 24, 2016 12:19

a script to capture information for mysql lock waiting

	#!/bin/bash

	# crontab
	# * * * * * /home/wangzx/mysql-lock-wait/mysql_lock_wait_check.sh

	function run_lock_wait() {
	now=`date +%s`
	seq=$(( $now / 30 % 600 )) # rotate 600 log file in 5 hours
	logfile=~/mysql-lock-wait/log/mysql_lock_wait-$seq.log

wangzaixiang / VolatileTest.java

Created June 18, 2014 11:05

Just for test the anti-volatile example, see http://ifeve.com/java-memory-model-1/

	package volatile_demo;

	import java.util.concurrent.BrokenBarrierException;
	import java.util.concurrent.CyclicBarrier;

	public class Test2 {

	int a = 0;
	int b = 0;

wangzaixiang / gist:c1421fd18267812e83d0

Created May 7, 2014 03:22

FizzBuzzWhizz https://www.jinshuju.net/f/EGQL3D

	package fbw

	object FizzBuzzWhizz {

	implicit class RichBoolean(bool: Boolean) {
	def option[T](value:T) = if(bool) Some(value) else None
	}
	implicit class RichOption[T](option:Option[T]) {
	def elseFlatMap(value: =>Option[T]) = option match {
	case Some(_) => option

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