Development in a Blink » Java

My PowerShell Video Is Considered A Classic

Doug Finke — Wed, 12 May 2010 01:45:04 +0000

Jeffrey Snover, Distinguished Engineer at Microsoft and creator of PowerShell, tweeted today about a video I posted converting C# to PowerShell. It’s a 7 minute presentation and worth a look.

Here is my original post Java and Groovy can do it. Why not C# and PowerShell and Mr. Snover’s blog post when it first went up Doug Finke’s Amazing 7 Minute C# => PowerShell Demo.

Thank you Mr. Snover, much appreciated.

Writing Fluent APIs in C#: Comparing Dates Fluently

Doug Finke — Sat, 13 Feb 2010 17:05:45 +0000

Kent Beck tweeted: screencast of a simple example of a fluent api driven by tests from @jitterted http://bit.ly/cSqtJE.

Using VS 2010 RC, C# and .NET 4.0

Ted Young gives a nice introduction into building fluent APIs using Java. He returns an instance of a DateBuilder to manage the dates. The .NET example copies this and uses extension methods.

I used VS 2010’s generate stub tooling for creating methods and classes while following Ted using IntelliJ IDEA in his video.

using System;
  
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            var somedate = new DateTime(2010, 1, 10);
            var otherDate = new DateTime(2010, 1, 31);
  
            System.Diagnostics.Debug.Assert(somedate.IsBefore(otherDate));
            System.Diagnostics.Debug.Assert(otherDate.IsBefore(somedate) == false);
  
            System.Diagnostics.Debug.Assert(Dates.Is(otherDate).OnOrAfter(somedate));
            System.Diagnostics.Debug.Assert(Dates.Is(somedate).OnOrAfter(otherDate) == false);
  
            System.Diagnostics.Debug.Assert(Dates.Is(somedate).OnOrBefore(otherDate));
            System.Diagnostics.Debug.Assert(Dates.Is(otherDate).OnOrBefore(somedate) == false);
  
            System.Diagnostics.Debug.Assert(Dates.Is(otherDate).On(otherDate));
            System.Diagnostics.Debug.Assert(Dates.Is(otherDate).On(somedate) == false);
  
            
  
        }
    }
  
    public static class Dates
    {
        public static bool IsBefore(this DateTime firstDateTime, DateTime otherDate)
        {
            return (firstDateTime <= otherDate) ? true : false;
        }
  
        public static bool IsAfter(this DateTime firstDateTime, DateTime otherDate)
        {
            return (firstDateTime >= otherDate) ? true : false;
        }
  
        public static DatesBuilder Is(DateTime firstDateTime)
        {
            return new DatesBuilder(firstDateTime);
        }
  
        public class DatesBuilder
        {
            private DateTime _firstDateTime;
  
            public DatesBuilder(DateTime firstDateTime)
            {
                this._firstDateTime = firstDateTime;
            }
  
            public bool OnOrAfter(DateTime otherDate)
            {
                return !_firstDateTime.IsBefore(otherDate);
            }
  
            public bool OnOrBefore(DateTime otherDate)
            {
                return !_firstDateTime.IsAfter(otherDate);
            }
  
            public bool On(DateTime otherDate)
            {
                return _firstDateTime.Equals(otherDate);
            }
        }
    }
}

There clearly needs to be a successor to Java

Doug Finke — Sun, 07 Feb 2010 13:02:27 +0000

Will Groovy++ spell the end of Scala?

As much as we all "try to be friends", the successor to Java (and there clearly needs to be one) "battle" continues

via blue train software

Groovy++ adds to Groovy static typing with very little in terms of trade off (meta programming)

Allowing mixing of static and dynamic code in the same application.
Same speed as Java – sometimes faster, sometimes slower depending on how the problem is expressed.
Groovy++ is really Java ++ and is thus a natural and easy path for the millions of Java programmers.
Groovy not being controlled by the boffins at Snoracle hopefully means innovation in the platform can happen much faster and address real developer needs.

Others in the community counter that Scala is ~50 times faster than Groovy++.

Microsoft’s Interoperability Bridges & Lab Center

Doug Finke — Tue, 17 Nov 2009 01:20:12 +0000

When Microsoft introduced Azure, they not only provided a .NET SDK, they also have provided a Java, PHP and Ruby SDK. Plus Eclipse editor tools.

Jean Paoli, co-creator of Xml, presented the story on Microsoft’s interoperability effort. Covering 4 key tenants: Products, Collaboration, Developer Resources and Standards Bodies.

For Microsoft’s big main products they

Have documented protocols, more than 80K pages
Work with more than 150 standards organizations
Sit down every six months for two days and talk with IBM, Red Hat, Apache etc. Having frank open non-marketing conversations about interoperability

Check out their page Interoperability Bridges & Lab Center.

Microsoft says they see big opportunities in the operability space. Perhaps another chance to embrace and extend.

PowerShell and Java

Doug Finke — Tue, 10 Mar 2009 23:15:18 +0000

PowerShell bridge is a utility that enables PowerShell scripts to run remotely from a Java program, server, browser or EWSJ (Java connector to Exchange Server).

Download here