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    <p>C#</p> <pre><code>myList&lt;string&gt;().ForEach( delegate(string name) { Console.WriteLine(name); }); </code></pre> <p>Anonymous delegates are not currently implemented in VB.Net, but both C# and VB.Net should be able to do lambdas:</p> <p>C#</p> <pre><code>myList&lt;string&gt;().ForEach(name =&gt; Console.WriteLine(name)); </code></pre> <p>VB.Net</p> <pre><code>myList(Of String)().ForEach(Function(name) Console.WriteLine(name)) </code></pre> <hr> <p>As Grauenwolf pointed out the above VB won't compile since the lambda doesn't return a value. A normal ForEach loop as others have suggested is probably the easiest for now, but as usual it takes a block of code to do what C# can do in one line.</p> <hr> <p>Here's a trite example of why this might be useful: this gives you the ability to pass in the loop logic from another scope than where the IEnumerable exists, so you don't even have to expose it if you don't want to.</p> <p>Say you have a list of relative url paths that you want to make absolute:</p> <pre><code>public IEnumerable&lt;String&gt; Paths(Func&lt;String&gt; formatter) { List&lt;String&gt; paths = new List&lt;String&gt;() { "/about", "/contact", "/services" }; return paths.ForEach(formatter); } </code></pre> <p>So then you could call the function this way:</p> <pre><code>var hostname = "myhost.com"; var formatter = f =&gt; String.Format("http://{0}{1}", hostname, f); IEnumerable&lt;String&gt; absolutePaths = Paths(formatter); </code></pre> <p>Giving you <code>"http://myhost.com/about", "http://myhost.com/contact"</code> etc. Obviously there are better ways to accomplish this in this specfic example, I'm just trying to demonstrate the basic principle.</p>
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    1. POWhat is the best way to iterate through a strongly-typed generic List<T>?
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    1. USAdam Lassek
    1. USAdam Lassek
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    1. COYour VB code won't work. VB only supports anonymous functions in this version, you have to wait until VB10 to have anonymous subroutines.
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      1. USJonathan Allen
    2. COYou are correct, I didn't test it before posting. No wonder documentation for lambda expressions in VB are so scarce; they aren't nearly as useful.
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      1. USAdam Lassek
    3. COObvious question: Why bother with callbacks when you can just do a `foreach`?
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      1. USSteven Sudit
 

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