liuwenzhuang’s gists

liuwenzhuang / objectEntries.js

Created July 19, 2018 05:54

使原生Object能够被遍历

	/**
	* 使object可遍历
	* @param {Object} obj 需要处理的object
	*/
	function* objectEntries(obj) {
	const propKeys = Reflect.ownKeys(obj);
	for(const propKey of propKeys) {
	yield [propKey, obj[propKey]];
	}
	}

liuwenzhuang / beforeunload.js

Created October 19, 2018 06:08

离开页面前的监听事件

	window.addEventListener("beforeunload", function (event) {
	if (!checkSomething()) { // 假设已存在此方法
	// 标准
	event.preventDefault();
	// Chrome需要
	event.returnValue = '';
	}
	});

liuwenzhuang / addSetGet2localStorage.js

Created March 6, 2019 09:08

Add set/get object capacity to localStorage 为localStorage增加读、写Object的能力

	if (typeof Storage === 'undefined') {
	window.localStorage = {};
	localStorage.setItem = function (key, val) {
	this[key] = val;
	};
	localStorage.getItem = function (key) {
	return this[key];
	};
	window.localStorage.setObject = function (key, value) {
	this[key] = value;

liuwenzhuang / add_schemes_windows_terminal.ps1

Last active January 11, 2020 12:19

为wsl添加主题.(add schemes from iTerm2-Color-Schemes to wsl profiles). Code from https://andrewpla.dev/Adding-New-Color-Schemes-To-Windows-Terminal/

	# Path to the profile when installed from the Windows Store.
	$profilePath = "C:\Users\$Env:Username\AppData\Local\Packages\Microsoft.WindowsTerminal_8wekyb3d8bbwe\LocalState\profiles.json"

	# remove comments
	$profile = (Get-Content $ProfilePath) -replace '(?m)(?<=^([^"]\|"[^"]"))//.' -replace '(?ms)/\.?\/' \| Out-String \| ConvertFrom-Json

	$backupProfilePath = "$home\Documents\WindowsTerminalprofiles.json"
	Write-Verbose "Backing up profile to $backupProfilePath"
	$profile \| ConvertTo-Json \| Set-Content $backupProfilePath

liuwenzhuang / .vimrc

Last active January 19, 2020 01:52

vim config file, place it to user directory

liuwenzhuang / profiles.json

Created January 19, 2020 02:15

Add Git Bash to windows terminal. Windows Terminal添加Git Bash

	{
	"profiles": [
	{
	"guid": "{61c54bbd-c2c6-5271-96e7-109a87ff44be}",
	"name": "Git Bash",
	"commandline": "%ProgramFiles%\\Git\\bin\\bash.exe --login -i",
	"icon": "%ProgramFiles%\\Git\\mingw64\\share\\git\\git-for-windows.ico",
	"startingDirectory": "%USERPROFILE%",
	"hidden": false
	},

liuwenzhuang / launch.json

Created June 5, 2020 07:11

launch and debug configuration for node, .vscode/launch.json

liuwenzhuang / binary-search-tree.ts

Created July 31, 2020 09:04

binary search tree in typescript

	// tslint:disable: max-classes-per-file
	class TreeNode {
	public left: TreeNode = null;
	public right: TreeNode = null;
	constructor(public data) {
	this.data = data;
	this.left = null;
	this.right = null;
	}
	}

liuwenzhuang / graph.ts

Created August 3, 2020 03:44

typescript realize graph by adjacency list

	class Graph {
	public adjList = new Map<any, any[]>();
	public numberOfVertexs: number = 0;

	public addVertex(vertex) {
	this.adjList.set(vertex, []);
	this.numberOfVertexs ++;
	}

	public addEdge(vertex1, vertex2) {

liuwenzhuang / main.js

Last active October 23, 2020 08:54

worker and main thread communicate by postMessage and addEventListener

	const worker = new Worker('worker.js')

	// handle data from worker
	worker.addEventListener('message', (e) => {
	console.log('worker send data back:', e.data)
	}, false);

	// handle error
	worker.addEventListener('error', (err) => {
	console.log(`Error: Line ${err.lineno} in ${err.filename} : ${e.message}`);

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