Recent snippets
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Using local LLMs from F#
Download and install Ollama: https://ollama.com/ Ollama is a free common host for multiple different LLM-models like Google Gemma, OpenApi's GPT-OSS, Deepseek, etc.
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Like the snippet!Posted: 7 days ago by Tuomas Hietanen
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ModelContextProtocol with FSharp (MCP with F#)
ModelContextProtocol with FSharp (MCP with F#) https://modelcontextprotocol.io/docs/getting-started/intro Client and Server examples using https://github.com/modelcontextprotocol/csharp-sdk
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Like the snippet!Posted: 7 days ago by Tuomas Hietanen
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Weighted Average
Takes a list of (quantity/amount and price/rate) as decimals, and gives a weighted average
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Like the snippet!Posted: 24 days ago by Tuomas Hietanen
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Creating Azure dashboard clock component with Farmer
Example of shaping an anonymous-object-as-JSON structure for an Azure dashboard using strong typing and minimal code using Farmer F# https://compositionalit.github.io/farmer/
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Like the snippet!Posted: 24 days ago by Tuomas Hietanen
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Functional Agent
A functional wrapper around MailboxProcessor that simplifies agent-based concurrency, adds error handling via events, and provides convenience functions to avoid common pitfalls when working with asynchronous message processing in F#.
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Like the snippet!Posted: 1 month ago by halcwb
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Timestamp with timezone (YYYYMMDDhhmmssffff+zzzz)
Timestamp: Time format in ISO 8601 with timezone. YYYYMMDDhhmmssffff+zzzz For example 2011-05-17 19:01:10.000 -0200 would be: 20110517190110000-0200
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Like the snippet!Posted: 3 months ago by Tuomas Hietanen
Popular snippets
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Filtering lists
Two functions showing how to filter functional lists using the specified predicate. First version uses naive recursion and the second one is tail-recursive using the accumulator parameter.
77 people like this
Like the snippet!Posted: 14 years ago by Tomas Petricek
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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.
67 people like this
Like the snippet!Posted: 14 years ago by Phillip Trelford
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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
57 people like thissignature. 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.
Like the snippet!Posted: 14 years ago by Ryan Riley
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Hello world (F#)
Classical "Hello world" example that prints a message to the console output. This version uses F# printfn function to do the printing.
185 people like this
Like the snippet!Posted: 14 years ago by Tomas Petricek
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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.
69 people like this
Like the snippet!Posted: 14 years ago by Rick Minerich
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Strategy pattern
Strategy pattern in F#
83 people like this
Like the snippet!Posted: 14 years ago by Tao Liu
Snippets by tags
fold (22) pattern matching (15) reflection (19) tryfsharp (48) mailboxprocessor (27) generic programming (17) recursion (33) agent (20) staging (18) algorithms (26) math (35) json (16) string (29) sequence (32) collections (16) quotations (21) http (18) computation expression (15) regex (17) kata (17)
Snippets by authors
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Database contains 3205 snippets out of which 1719 is public.