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• Haskell function : iterate

  Implements iterate function from Haskell's Prelude. The function generates an infinite sequence by applying a function to the initial value (first) and then to the result of previous application.

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  Posted: 15 years ago by Nick Palladinos

• Chain of responsibility

  The following sample wants to make sure the person’s age is between 18 and 65, weight is no more than 200 and tall enough (>120).

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  Posted: 14 years ago by Tao Liu

• FSX Structure

  I use this basic template when writing .fsx files that I might want to compile. It adjusts the difference in command line/entrypoint handling between a script and a compiled assembly. This example shows the details for a WPF script — replace the #r's and/or remove the STAThread for a WinForms or Console script.

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  Posted: 15 years ago by Blake Coverett

• Active pattern for let binding inside patterns

  The Let active pattern demonstrated by this snippet can be used to assign values to symbols in pattern matching. This is useful for writing complex pattern matching using match as we can handle multiple cases using a single clause.

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  Posted: 15 years ago by Tomas Petricek

• Composable WCF Web API using Async

  A functional wrapper around the new WCF Web APIs (http://wcf.codeplex.com/). Composition is achieved through the use of the HttpRequestMessage -> Async signature. Pushing the app calls in the MessageHandler intercepts all requests and allows you to take control at the earliest point possible before operation selection occurs. Extending this slightly to call the innerChannel's SendAsync would allow you to create a middleware layer that would work both with this and other, normal Web API services.

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  Posted: 15 years ago by Ryan Riley

• Asynchronous sequences

  An asynchronous sequence is similar to the seq type, but the elements of the sequence are generated asynchronously without blocking the caller as in Async. This snippet declares asynchronous sequence and uses it to compare two files in 1k blocks.

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  Posted: 15 years ago by Tomas Petricek

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