Visual studio 2019 preview & C# 8 initial experience

Visual studio 2019 preview & C# 8 initial experience

using System;

using static System.Console;

namespace ConsoleApp2

{

class Program

{

static void Main(string[] args)

{

string s = null;

WriteLine(s.ToString());

WriteLine($"The first letter of {s} is {s[0]}");

}

}

}

<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>

<OutputType>Exe</OutputType>

<TargetFramework>netcoreapp3.0</TargetFramework>

<ApplicationIcon />

<StartupObject />

<AssemblyName>ConsoleApp1</AssemblyName>

<RootNamespace>ConsoleApp1</RootNamespace>

<LangVersion>8.0</LangVersion>

<NullableReferenceTypes>true</NullableReferenceTypes>

</PropertyGroup>

using System;

using static System.Console;

namespace ConsoleApp2

{

class Program

{

static void Main(string[] args)

{

string? s = null;

WriteLine($"The first letter of {s}is {s?[0] ?? '?'}");

}

}

}

转载于:https://www.cnblogs.com/xiexiaokui/p/10121591.html

标签：www,string,C#,initial,System,experience,static,WriteLine,using
来源： https://blog.csdn.net/weixin_30641999/article/details/96268771