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: 8 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: 26 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: 1 month 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: 1 month 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: 1 month 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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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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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.
203 people like this
Like the snippet!Posted: 9 years ago by Nick Palladinos
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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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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.
68 people like this
Like the snippet!Posted: 9 years ago by Alex Muscar
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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.
293 people like this
Like the snippet!Posted: 9 years ago by Nick Palladinos
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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.
66 people like this
Like the snippet!Posted: 9 years ago by Tomas Petricek
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