Map (higher-order function): Difference between revisions

Revision as of 06:40, 5 June 2008

Revision as of 11:51, 5 June 2008

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* <code>fmap id = id -- identity</code>

* <code>fmap (f . g) = fmap f . fmap g -- composition</code>

==Mapping in .NET Procedural Languages==

The map function in .NET Procedural languages like C# or VB.NET (as of C# 2.0 and VB 8.0{{factFact|date=June 2008}}) is supported through the <code>select</code> extension method. Here's an example that combines the use of select() with the use of [[anonymous functions]], support for which was added to C# in version 3.0 (November 2007).

<source lang="csharp">