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infoq.com

In this podcast, Shane Hastie, the Lead Editor for Culture & Methods, spoke to Courtney Nash about her research on the unintended consequences of automation in software systems, the importance of learning from incidents, and maintaining human expertise in complex systems.

pardner.com

Twice as 25 as those other dot-com founders

effectivesoftwaredesign.com

You should talk to strangers! We can learn that from the Pirkei Avot, also called the Ethics of the Fathers, a Jewish book that is part of the Talmud and was written more than 2000 (two thousand) y…

neverletdown.net

Half-way through  @michaelkeeling 's "Design It!" and I'm ready to recommend it to _everybody_. It is a practical but thorough guide to th...

theliquidateher.com

your source for powerful, easy-to-use, reasonably priced macintosh os x and windows windows 7/8/10, vista home design software, model railroad design and simulation software, and game design software.

stefanoricciardi.com

The Problem of Circular ReferencesRecently I had to model a tree-like structure using a variation of the GoF composite design pattern and to pass this class to a WCF service for further processing. The class has circular reference as described by the following drawing: Therefore off I went to naively create my DataContract along the following lines:[DataContract(Namespace = "http://schemas.acme.it/2009/10"]public class Node{ [DataMember(Name="Children", Order=2)] private IList children; [DataMember(Name="Id", Order=0)] public string Id { get; set; } [DataMember(Name="Parent", Order=1)] public Node Parent { get; set; } public Node() { children = new List() } public void AddChild(Node node) { this.children.Add(node); node.Parent = this; } public IList Children { get { IList result = new List(this.children); foreach (Node child in this.children) { foreach (Node innerChild in child.Children) { result.Add(innerChild); } } return result; } }}Unfortunately at run time I was greeted by the following exception: Object graph for type 'System.Collections.Generic.List`1[[Node ...]]' contains cycles and cannot be serialized if reference tracking is disabled.The SolutionReading around I realized that up until some time ago you had to implement your own DataContractSerializer (see for example this post by Sowmy Srinivasan). Luckily, it turns out that with NET 3.5 SP1 everything is much simpler: you just have to use the IsReference parameter in the DataContract attribute, as follows:[DataContract(Namespace = "http://schemas.acme.it/2009/10", IsReference=true)]public class Node{ // everything same as in the example above.}The CatchFor some reason, if you turn on the IsReference attribute, then you cannot set the IsRequired attri

wirfs-brock.com

A Personal Digital Habitat is a federated multi-device information environment within which a person routinely dwells.