Can you make this code run any faster?
time to read 3 min | 597 words 
public static class GuidExtensions
{
    public static Guid TransfromToGuidWithProperSorting(this byte[] bytes)
    {
        return new Guid(new[]
        {
            bytes[10],
            bytes[11],
            bytes[12],
            bytes[13],
            bytes[14],
            bytes[15],
            bytes[8],
            bytes[9],
            bytes[6],
            bytes[7],
            bytes[4],
            bytes[5],
            bytes[0],
            bytes[1],
            bytes[2],
            bytes[3],
        });
    }

    public static byte[] TransformToValueForEsentSorting(this Guid guid)
    {
        var bytes = guid.ToByteArray();
        return new[]
        {
            bytes[12],
            bytes[13],
            bytes[14],
            bytes[15],
            bytes[10],
            bytes[11],
            bytes[8],
            bytes[9],
            bytes[6],
            bytes[7],
            bytes[0],
            bytes[1],
            bytes[2],
            bytes[3],
            bytes[4],
            bytes[5],
        };
    }
}

 

Just to note, this is stupid micro optimization trick, it takes 0.00008 ms to execute right now, which is plenty fast enough, but it is fun to play with it.

0 comments

Related posts that you may find interesting:

31 Dec 2015 Code review challenge: The concurrent dictionary refactoring–answer
challenges
10 Jun 2010 Checking For Empty Enumerations
C#
30 Dec 2011 Application analysis: Northwind.NET
EF Prof Reviews