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• A beautiful fixed-point finding function

  We start with an initial value and then applying f repeatedly, until the value does not change anymore.

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  Posted: 15 years ago by Nick Palladinos

• Association list lookup

  While prototyping programs I find myself using association lists. This little snippet defines a lookup functions for association lists defined as lists of tuples.

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  Posted: 15 years ago by Alex Muscar

• 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

• Top-Down-Operator-Precedence Parser

  F# implementation of a generic Top-Down-Operator-Precedence Parser as described in this paper http://portal.acm.org/citation.cfm?id=512931 Example starts at line ~300

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  Posted: 15 years ago by fholm

• ObservableObject

  The ObservableObject type implements the INotifyPropertyChanged interface used in WPF and Silverlight to notify on changes to properties that are bound to a control. Specify property names type safely using F# Quotations, i.e. <@ this.PropertyName @> when invoking the NotifyPropertyChanged method. If you are following the MVVM pattern then your View Model class can inherit from the ObservableObject type.

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  Posted: 15 years ago by Phillip Trelford

• Partition a sequence until a predicate is satiated

  This function is given a partition predicate and a sequence. Until the predicate returns false, a list will be filled with elements. When it is, both the list and the remainder of the sequence will be returned. Note that this example preserves the laziness of the unchecked sequence elements.

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  Posted: 15 years ago by Rick Minerich

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