yrong’s gists

yrong / customEdge.html

Created November 12, 2019 13:33 — forked from davidjgraph/customEdge.html

Custom edge example for mxGraph

	<!--
	$Id: markers.html,v 1.4 2013/10/28 08:44:55 gaudenz Exp $
	Copyright (c) 2006-2014, JGraph Ltd

	Demonstrates creating a custom edge in mxGraph
	-->
	<html>
	<head>
	<title>Custom edge example for mxGraph</title>

yrong / install.ps1

Created November 1, 2019 08:24

install node&pm2 and make app as service

	write-host "check administator rights"
	if (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
	write-Warning "This setup needs admin permissions. Please run this file as admin."
	exit
	}


	write-host "check os and powershell"
	if (-NOT ([Environment]::Is64BitProcess))
	{

yrong / pivot.js

Created August 31, 2019 13:25 — forked from parshap/pivot.js

Find pivot index

	// Return the "pivot index" of the given array of numbers. The pivot index is
	// the index where the sum of the numbers on the left is equal to the sum of
	// the numbers on the right.
	function pivot(numbers) {
	validateInput(numbers);

	// Find a pivot index by testing each index
	for (var i = 0; i < numbers.length; i++) {
	var leftSum = sum(numbers.slice(0, i));
	var rightSum = sum(numbers.slice(i + 1));

yrong / crawler dedup

Created July 24, 2019 08:51

yrong / choco_installer.ps1

Created December 21, 2018 09:33

choco installer

	### CONFIGURATION

	### require administator rights

	if (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
	write-Warning "This setup needs admin permissions. Please run this file as admin."
	break
	}

yrong / install_python.ps1

Created December 17, 2018 07:59 — forked from carlosfunk/install_python.ps1

Powershell scripts for setting up a Python environment under Windows

	# To run this file you will need to open Powershell as administrator and first run:
	# Set-ExecutionPolicy Unrestricted
	# Then source this script by running:
	# . .\install_python.ps1

	$save_dir=Resolve-Path ~/Downloads
	$project_dir = "C:\Projects"
	$virtualenv_dir = $project_dir + "\virtualenvs"

	$client = New-Object System.Net.WebClient

yrong / nodejs_installer.ps1

Created November 26, 2018 09:21 — forked from nweldev/nodejs_installer.ps1

Powershell script installing nodejs (with git) and some npm packages

	write-host "`n ## NODEJS INSTALLER ## `n"

	### CONFIGURATION

	# nodejs
	$version = "4.4.7-x64"
	$url = "https://nodejs.org/dist/latest-v4.x/node-v$version.msi"

	# git
	$git_version = "2.9.2"

yrong / postgresql.py

Created July 30, 2018 01:06 — forked from robertsosinski/postgresql.py

DataDog script for collecting PostgreSQL stats

	# Create the datadog user with select only permissions:
	# CREATE USER datadog WITH PASSWORD '<complex_password>';
	#
	# Grant select permissions on a table or view that you want to monitor:
	# GRANT SELECT ON <schema>.<table> TO datadog;
	#
	# Grant permissions for a specific column on a table or view that you want to monitor:
	# GRANT SELECT (id, name) ON <schema>.<table> TO datadog;
	#
	# Let non-superusers look at pg_stat_activity in a read-only fashon.

yrong / multiple_select.go

Created July 13, 2018 08:31

multiple select

	func main(){
	var n int = 10
	var chs = make([]chan int, n)

	var worker = func(n int, c chan int){
	for i:=0;i<n;i++{
	c<-i
	}
	close(c)
	}

yrong / observer.go

Created July 6, 2018 04:16

observer.go

	// Package main serves as an example application that makes use of the observer pattern.
	package main

	import (
	"fmt"
	"time"
	)

	type (
	// Event defines an indication of a point-in-time occurrence.

Ron yrong