xbotter

public class LazyLoad<T>
{
    private readonly Lazy<T> _lazy;
    private T _value;

    public LazyLoad(Func<T> valueFactory)
    {
        _lazy = new Lazy<T>(valueFactory);
    }

xbotter

#!/bin/bash
apt-get install -y curl unzip

mkdir -p /var/lib/consul
mkdir -p /usr/share/consul
mkdir -p /etc/consul/conf.d

curl -OL https://releases.hashicorp.com/consul/0.7.5/consul_0.7.5_linux_amd64.zip
unzip consul_0.7.5_linux_amd64.zip
mv consul /usr/local/bin/consul

xbotter

using System;

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Two the_two = new Two();
            //      协变                       逆变

xbotter

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApplication
{
    public class Program
    {

xbotter

// define round
function round(float,precision) { 
    return Math.round(float/precision)/(1/precision);
}
// how to use 

round(0.3-0.2, .001)