Snippets tagged F#
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Playing with async sequences
Attempt to reimplement functions AsyncRead/AsyncReadLines from 'Rx on the server ' articles (by Jeffrey van Gogh) using idea of AsyncSequence (by Tomas Petricek)
26 people like this
Like the snippet!Posted: 13 years ago by Vladimir Matveev
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Abstraction of the "tail-recursive loop" pattern
A novel, due to performance inadequacy, abstraction of the "tail-recursive loop" pattern. Approaching what a built-in language feature might look like.
3 people like this
Like the snippet!Posted: 12 years ago by Stephen Swensen
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Structural BeginUpdate / EndUpdate with Lambda
Several WinForms controls, like TreeView and ListView, implement methods BeginUpdate and EndUpdate, which suspend repainting of the control while items are being individually added to a control, preventing flicker caused by rapid repainting. But using BeginUpdate and EndUpdate is very imperative, and opens up the possibility for bugs, such as neglecting to call the matching EndUpdate. An obvious improvement would be to create an extension method on types implementing this pattern which takes a unit -> unit lambda which is executed between update pairs. But the pattern is only conventional, rather than through a common base class or interface. Hence this presents a reasonable opportunity to use F#'s statically resolved structural type system to implement a function which only works on Control types with the correct structural signature.
3 people like this
Like the snippet!Posted: 12 years ago by Stephen Swensen
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Ninety-Nine F# Problems - Problems 11 - 20 - List, continued]
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
7 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 31 - 41 - Arithmetic]
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
4 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 54 - 60 - Binary trees
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
6 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 70 - 73 - Multiway Trees
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
5 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 90 - 94 - Miscellaneous problems]
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
3 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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How to check whether an F# function/method has been initialized
Sometimes, we may run into this kind of situation that we want to check if the given method/function has been initialized. We all know this is fairly easy in C#, since we can use delegate to invoke the function , then verify if the value of delegate is null. But in F# , delegate is rarely needed because F# can treat a function as a value, without the need for any wrapper. So , here is an easy way to solve this problem.
6 people like this
Like the snippet!Posted: 11 years ago by ZackZhou
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How to Serialize Record, Discriminated Union and Tuple in Azure?
Here is the implementation of the three types in WCF Azure, and a sample using WCF in worker role, a WPF test project to invoke the three kinds of data type from worker role. Link is http://fsharp3sample.codeplex.com/SourceControl/changeset/view/13876
4 people like this
Like the snippet!Posted: 11 years ago by AndrewXue
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A Slightly Larger DSL for Building Weighted Graphs
A small DSL for graph building by combining weighted paths. It's just a map of edges to weights under the hood, so no need to worry about duplication causing problems. This is part of a larger project I'm calling edgy.
2 people like this
Like the snippet!Posted: 11 years ago by Rick Minerich
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FsSql usage example
FsSql is originally here: https://github.com/mausch/FsSql and better sample is there too but I just want to share it.
2 people like this
Like the snippet!Posted: 11 years ago by Ash Harley
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CSS EDSL in F#
F# to CSS compiler (CSS EDSL in F#) <+> inspired by Clay and FAKE - https://github.com/Cynede/Failess
7 people like this
Like the snippet!Posted: 11 years ago by Heather
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Kata Six: Anagrams - solution in F#
Solution to Kata Six: Anagrams from http://codekata.pragprog.com/2007/01/kata_six_anagra.html in F#
1 people like this
Like the snippet!Posted: 11 years ago by Suzanna
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Exploring Population Data
Learn Key Principle of F# in just a few minutes with the following Sample of "World Bank Type Provider - Exploring Population Data"
381 people like this
Like the snippet!Posted: 10 years ago by Muhammad Mugees Asif
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Memoization modules
Helper modules for different kinds of memoize functions.
1 people like this
Like the snippet!Posted: 10 years ago by Daniel Fabian (@iceypoi)
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Minimum Covering
https://twitter.com/kot_2010/status/607115335255392256
0 people like this
Like the snippet!Posted: 8 years ago by Tamizhvendan
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Replicate the elements of a list a given number of times
One of the 99 OCaml problems rewritten in F#
0 people like this
Like the snippet!Posted: 8 years ago by Vladimir Khorikov
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Learning Flappy Bird in F# with Nephew
Learning F# with my 11 year old nephew, he is loving it, swapping out assets and creating new ones, adjusting gravity to what feels right to him and putting in very basic collision detection. Going to keep expanding on it over the year.
4 people like this
Like the snippet!Posted: 8 years ago by John Nolan, Callum Simpson
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euler047.fsx
Jelmer047.fsx
1 people like this
Like the snippet!Posted: 8 years ago by jelmer
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Idiomatic F# wrapper for storing and reading from MonoDB
Basic wrapper for storing and reading documents from MongoDB with the official .NET driver.
5 people like this
Like the snippet!Posted: 4 years ago by Elliot V. Brown
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WPF Custom Control
This snippet shows how to create a WPF custom control library in F#.
4 people like this
Like the snippet!Posted: 9 months ago by Fahad
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palindromes
Find every substring that is a palindrome. A bit lazier than the original.
1 people like this
Like the snippet!Posted: 13 years ago by Kevin Cantu
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F# Quotations with INotifyPropertyChanged
ViewModelBase for F# users who want to use it in WPF / Silverlight
16 people like this
Like the snippet!Posted: 12 years ago by Fahad
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Ninety-Nine F# Problems - Problems 1 - 10 - Lists
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
33 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 21 - 28 - Lists again
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
6 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 46 - 50 - Logic and Codes
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
6 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 61 - 69 - Binary trees
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
3 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 80 - 89 - Graphs
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
10 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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Ninety-Nine F# Problems - Problems 95 - 99 - Miscellaneous problems]
These are F# solutions of Ninety-Nine Haskell Problems which are themselves translations of Ninety-Nine Lisp Problems and Ninety-Nine Prolog Problems. The solutions are hidden so you can try to solve them yourself.
5 people like this
Like the snippet!Posted: 12 years ago by Cesar Mendoza
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F# yet another Interop example
Quick demo of using F# to interop with a native C library. C Library has not been checked for algorithm correctness (but works exactly as the origional).
13 people like this
Like the snippet!Posted: 11 years ago by David Klein
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A Small DSL for Building Graphs
A small DSL for graph building by combining paths. It's just a set of edges under the hood, so no need to worry about duplication causing problems. This is part of a larger project I'm calling edgy.
9 people like this
Like the snippet!Posted: 11 years ago by Rick Minerich
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WinAPI IniFile F# Interface
work with ini file with WritePrivateProfileString, GetPrivateProfileString easy as pie
1 people like this
Like the snippet!Posted: 11 years ago by nCdy
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Primes
Generates the Prime Number Sequence.
1 people like this
Like the snippet!Posted: 11 years ago by AdamSpeight2008
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Bloom filter implementation in F#
http://codekata.pragprog.com/2007/01/kata_five_bloom.html
3 people like this
Like the snippet!Posted: 11 years ago by Suzanna
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Either in F#
Had to throw together a Haskell-style Either type in F# since Choice is a pain in the ass.
5 people like this
Like the snippet!Posted: 10 years ago by Bryan Edds
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Array tail match
Match the first elements of an array an returns tail.
3 people like this
Like the snippet!Posted: 10 years ago by thinkbeforecoding
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99 Bottles of Beer on the Wall
263 bytes (unix line endings ;))
6 people like this
Like the snippet!Posted: 9 years ago by Simon Dickson
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Brute Force Solutions to Viral Math Problem From Vietnam
Solution to Viral Math Problem From Vietnam explained on: http://mindyourdecisions.com/blog/2015/05/20/viral-math-problem-from-vietnam-are-you-smarter-than-an-8-year-old/#.VXhmhs-eDRY
1 people like this
Like the snippet!Posted: 8 years ago by HK
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Extract a given number of randomly selected elements from a list
One of the problems from https://ocaml.org/learn/tutorials/99problems.html
0 people like this
Like the snippet!Posted: 8 years ago by Vladimir Khorikov
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Relax some of the indentation rules
A snippet demonstrating the F# feature request to relax some of the indentation rules.
2 people like this
Like the snippet!Posted: 8 years ago by Tomas Petricek
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F# snippet formatting service
Do you want to format F# snippets, but cannot easily run the F# Formatting library as part of your documentation processing? We just added F# Formatting as a service (FAAS!) API to the F# Snippets. This code snippet shows how to call the service.
2 people like this
Like the snippet!Posted: 7 years ago by Tomas Petricek
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Very Fast Permutations
I spent a lot of time this week profiling different permutation functions from various places on the internet. The following was by far the fastest:
8 people like this
Like the snippet!Posted: 4 years ago by Rick Minerich