C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;

#nullable enable

public class TestCase {

   public static DateTime JoinNullableDateTime(DateTime? date, DateTime? time)
   {
      if ((date == null) && (time == null))
         return DateTime.MinValue;
      else if ((date != null) && (time == null))
         return date.Value.Date;
      else if ((date == null) && (time != null))
         return DateTime.MinValue.Add(time.Value.TimeOfDay);
      else
         return date.Value.Date.Add(time.Value.TimeOfDay);
   }
	
   public static void Main()
   {
       DateTime dt = JoinNullableDateTime(null, null);
	   Console.WriteLine(dt.ToString());
   }
}

​x
 
using System;
​
#nullable enable
​
public class TestCase {
​
   public static DateTime JoinNullableDateTime(DateTime? date, DateTime? time)
   {
      if ((date == null) && (time == null))
         return DateTime.MinValue;
      else if ((date != null) && (time == null))
         return date.Value.Date;
      else if ((date == null) && (time != null))
         return DateTime.MinValue.Add(time.Value.TimeOfDay);
      else
         return date.Value.Date.Add(time.Value.TimeOfDay);
   }
    
   public static void Main()
   {
       DateTime dt = JoinNullableDateTime(null, null);
       Console.WriteLine(dt.ToString());
   }
}

CheckIfRegexAcceptsLowercase:
abc IgnoreCase => True == True
ABC IgnoreCase => True == True
[ABC] None => False == False
[abc] None => True == True
[abc^ABC] None => True == True
[ABC^abc] None => False == False
\[abc^ABC\] None => True == True
\[ABC^abc\] None => True == True
[aBC^Abc] None => True == True
[Abc^aBC] None => True == True
\p{Ll} None => True == True
\\p{Ll} None => True == True
\P{Ll} None => False == False
\p{Lu} None => False == False
\\p{Lu} None => True == True
\P{Lu} None => True == True

CheckIfRegexAcceptsUppercase:
abc IgnoreCase => True == True
ABC IgnoreCase => True == True
[ABC] None => True == True
[abc] None => False == False
[abc^ABC] None => False == False
[ABC^abc] None => True == True
\[abc^ABC\] None => True == True
\[ABC^abc\] None => True == True
[aBC^Abc] None => True == True
[Abc^aBC] None => True == True
\p{Ll} None => False == False
\\p{Ll} None => True == True
\P{Ll} None => True == True
\p{Lu} None => True == True
\\p{Lu} None => True == True
\P{Lu} None => False == False

Last Run:	8:08:16 am
Compile:	0.282s
Execute:	0.012s
Memory:	208kb
CPU:	0.016s

View IL Code