Recent snippets
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.NET Core 3 Windows Service
With .NET Core 3 a template 'dotnet new worker' was created that allows services to be created. The template currently only works to create C# code so this snippet shows how I have translated the C# into F# and the steps needed to create the service. dotnet new console -lang F# -o FsharpService cd FsharpService dotnet add package Microsoft.Extensions.Hosting.WindowsServices dotnet add package System.Net.NameResolution Update the program.fs as shown below and then build and install the service dotnet publish -r win-x64 -c Release /p:PublishSingleFile=true /p:PublishTrimmed=true -o "./published" sc create fSharpService binPath= "<
1 people like this>\FsharpService.exe"
Like the snippet!Posted: 2 days ago by Jackson McCann
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Useful operator definition for interop with C#
invokes op_Implicit when applied (for implicit conversions). I have found this to be very convenient when using C# libraries
5 people like this
Like the snippet!Posted: 20 days ago by Faisal Waris
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Configure F# Interactive to use Microsoft.ML.Net
Until FSI gets package references, we are to reference DLLs individually. This script sets up the FSI session to use ML.Net - assuming the required packages are loaded in the default location for the solution. Normally, referencing the latest AutoML and TimeSeries packages will net all the packages listed here.
4 people like this
Like the snippet!Posted: 27 days ago by Faisal Waris
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Coding with Emojis
In Windows you can press WindowsKey & dot to open Emoji menu.
8 people like this
Like the snippet!Posted: 28 days ago by Tuomas Hietanen
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list function for cross tabulation and pivot tables
Convert a list of tuples into a crosstab of key with list of values with that key
3 people like this
Like the snippet!Posted: 29 days ago by Steve Channell
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Async applicatives
A minimal async builder applicatives example. Also showcases fssnip support for F# preview language features.
8 people like this
Like the snippet!Posted: 1 month ago by Eirik Tsarpalis
Popular snippets
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Factory Pattern
Factory pattern in F#
74 people like this
Like the snippet!Posted: 8 years ago by Tao Liu
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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.
68 people like this
Like the snippet!Posted: 9 years ago by Rick Minerich
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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).
78 people like this
Like the snippet!Posted: 8 years ago by Tao Liu
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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.
181 people like this
Like the snippet!Posted: 9 years ago by Tomas Petricek
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Dynamic operator using Reflection
Demonstrates how to implement the dynamic operator (?) using .NET Reflection. The implementation supports calling constructors, propreties and methods using simple overload resolution (based on parameter count). It handles instance as well as static members.
65 people like this
Like the snippet!Posted: 9 years ago by Tomas Petricek
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Pipeline list processing
An example showing how to process list in a pipeline. We first use List.filter to return only even numbers and then use List.map to format them as strings.
90 people like this
Like the snippet!Posted: 9 years ago by Tomas Petricek
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