#ref #out #in | C# Online Compiler

#ref #out #in by Kamil H

using System;

public class Program
{
	public static void Main()
	{
		var str = "Początkowa wartość";		
		Modify(str);
		Console.WriteLine("Po robocie: {0:s}", str);
		
		var strRef = "Początkowa wartość";
		ModifyRef(ref strRef);
		Console.WriteLine("Po robocie (ref): {0:s}", strRef);
		
		string strOut;
		ModifyOut(out strOut);
		Console.WriteLine("Po robocie (out): {0:s}", strOut);
		
		//var strIn = "Początkowa wartość";
		//ModifyIn(in strRef);
		//Console.WriteLine("Po robocie (in): {0:s}"strRef);
	}
	
    static void ModifyRef(ref string val)
	{
		val += " i co dalej? ...";
	}
	
	static void Modify(string val)
	{
		val += " i co dalej? ...";
	}
	
	static void ModifyOut(out string val)
	{
		val = "i co dalej? ...";
	}
	
	//static void ModifyIn(in string val)
	//{
	//	val += " i co dalej? ...";
	//}
}

​x
 
using System;
​
public class Program
{
    public static void Main()
    {
        var str = "Początkowa wartość";     
        Modify(str);
        Console.WriteLine("Po robocie: {0:s}", str);
        
        var strRef = "Początkowa wartość";
        ModifyRef(ref strRef);
        Console.WriteLine("Po robocie (ref): {0:s}", strRef);
        
        string strOut;
        ModifyOut(out strOut);
        Console.WriteLine("Po robocie (out): {0:s}", strOut);
        
        //var strIn = "Początkowa wartość";
        //ModifyIn(in strRef);
        //Console.WriteLine("Po robocie (in): {0:s}"strRef);
    }
    
    static void ModifyRef(ref string val)
    {
        val += " i co dalej? ...";
    }
    
    static void Modify(string val)
    {
        val += " i co dalej? ...";
    }
    
    static void ModifyOut(out string val)
    {
        val = "i co dalej? ...";
    }
    
    //static void ModifyIn(in string val)
    //{
    //  val += " i co dalej? ...";
    //}
}

Going from the bad format to DateTimeOffset w/TimeZone looks like:

    Formatted Date: 12:01am PT Jan-01 2001
    Date: 01/01/2001 00:01:00 -08:00
    TimeZone: (UTC-08:00) Pacific Time (Los Angeles)

    Formatted Date: 12:01am PT Jul-01 2001
    Date: 07/01/2001 00:01:00 -07:00
    TimeZone: (UTC-08:00) Pacific Time (Los Angeles)

    Formatted Date: 12:01am MT Jan-01 2001
    Date: 01/01/2001 00:01:00 -07:00
    TimeZone: (UTC-07:00) Mountain Time (Denver)

    Formatted Date: 12:01am MT Jul-01 2001
    Date: 07/01/2001 00:01:00 -06:00
    TimeZone: (UTC-07:00) Mountain Time (Denver)

Going the other way looks like

    UtcDate: 01/01/2021 07:00:00
    Zone:(UTC-07:00) Mountain Time (Phoenix)
    Date In Targe TimeZone: 01/01/2021 00:00:00 -07:00
    FormattedDate: 12:00am MT Jan-01 2021

    UtcDate: 07/01/2021 07:00:00
    Zone:(UTC-07:00) Mountain Time (Phoenix)
    Date In Targe TimeZone: 07/01/2021 00:00:00 -07:00
    FormattedDate: 12:00am PT Jul-01 2021

The full round trip looks like

    SourceDateTime: 12:01am PT Jan-01 2001
    ParsedDateTime: 01/01/2001 00:01:00 -08:00
    FormattedDateTime: 12:01am PT Jan-01 2001

    SourceDateTime: 12:01am PT Jul-01 2001
    ParsedDateTime: 07/01/2001 00:01:00 -07:00
    FormattedDateTime: 12:01am PT Jul-01 2001

Last Run:	4:21:36 pm
Compile:	0.016s
Execute:	0.11s
Memory:	12.33Mb
CPU:	0.126s

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