Functional list processing in C# 2.0 with anonymous delegates

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re: Functional list processing in C# 2.0 with anonymous delegates

Sergio Arancibia — Thu, 27 Jul 2006 19:01:55 GMT

Thanks, this article is enlighting!

re: Functional list processing in C# 2.0 with anonymous delegates

Michael Sorens — Tue, 22 Aug 2006 22:21:35 GMT

Fascinating article--thanks for bringing the art of delegates a little bit easier to grasp. Besides enjoying C# I am also a Perl aficionado, where the map function (called "map" of course) is thoroughly useful.

re: Functional list processing in C# 2.0 with anonymous delegates

David Johnston — Sat, 16 Sep 2006 00:10:59 GMT

Useful stuff indeed - helps me move my functional Python to C#. However, one cannot but feel that C# is missing the boat e.g.

Python
======

class Point:
def __init__(self, line):
fields = line.split(",")
self.values = map(eval,fields) # array of reals

C#
==
class Point

{

public double[] values;

Point(string line)

{

string[] separator = { "," };

string[] fields = line.Split(separator, System.StringSplitOptions.RemoveEmptyEntries);

List<string> s = new List<string>(fields);

List<double> d = s.ConvertAll<double>(delegate(string ss) { return double.Parse(ss); } );

values = d.ToArray();

}

}

re: Functional list processing in C# 2.0 with anonymous delegates

kentcb — Mon, 18 Sep 2006 06:45:22 GMT

Excellent article - thanks. I know it was just a (cool) example, but - just in case someone uses it - those FileStreams should be closed:

static List<string> GetBigFiles(string directory, int bigLength)
{
List<string> paths = new List<string>(Directory.GetFiles(directory));
return paths.ConvertAll<FileStream>( File.OpenRead )
.FindAll( delegate(FileStream f) { return f.Length >= bigLength; } )
.ConvertAll<string>( delegate(FileStream f) { f.Close(); return f.Name; } );
}

David Leston’s Dot Net Blog » Functional List Processing

David Leston’s Dot Net Blog » Functional List Processing — Mon, 18 Dec 2006 12:55:22 GMT

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David Leston’s Dot Net Blog » Functional List Processing with Anonymous Delegates

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Things I Don't Miss in .NET 1.1

Martin Cook's Blog — Sat, 21 Apr 2007 18:48:10 GMT

This topic could easily be turned into a recurring post. Anyway, I have been fortunate enough to have

re: Functional list processing in C# 2.0 with anonymous delegates

Nick Sterling — Tue, 24 Jul 2007 16:03:03 GMT

This is a massively helpful article.

re: Functional list processing in C# 2.0 with anonymous delegates

Guy Starbuck — Wed, 19 Dec 2007 06:24:06 GMT

Excellent post, and a great, clear explanation of some esoteric but powerful stuff.

Developing for Developers Functional list processing in C 2 0 with | Cast Iron Cookware

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Developing for Developers Functional list processing in C 2 0 with | Quick Diets

Developing for Developers Functional list processing in C 2 0 with | Quick Diets — Tue, 09 Jun 2009 13:58:18 GMT

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