Snippets created by Phillip Trelford
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LinkedList extensions
LinkedList functional extension providing find and findi higher order functions that take a predicate function.
41 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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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: 13 years ago by Phillip Trelford
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Spreadsheet
Spreadsheet script runnable inside http://tryfsharp.org includes a custom DataGrid and a parser for simple formulas e.g.: =1+1 =SUM(A1,A2) Add your own functions to the evaluate function. For a more comprehensive implementation check out http://cellz.codeplex.com
6 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Calculator
Simple Silverlight Calculator UI interactive sample runnable inside http://tryfsharp.org.
1 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Miss Grant's Controller Parser
State machine example, from Martin Fowler's Domain-Specific Languages book, implemented as an External DSL parser in F#. A set of mutually recursive functions are used to parse the string tokens and build the State Machine as an F# record type.
12 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Tetris
Playable Tetris mini-game. Use arrow keys to move left and right and up to rotate, down to drop. Try it out in the browser on TryFSharp.org
18 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Turtle
Turtle graphics library implemented as an internal DSL, providing a very similar syntax to Logo, it is runnable inside TryFSharp.org.
10 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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JSON Parser
JSON Parser using Regular Expressions & Active Patterns (just for fun).
8 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Times Table JS game
Simple times table browser based game., compiles to JavaScript via Pit (v0.1) (http://pitfw.posterous.com). Run: http://trelford.com/SevenSixes.htm
2 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Starbucks
Simple DSL for describing cups of Starbucks coffee and computing prices (in dollars).
16 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Point of Sale
10 line Point of Sale (POS) application takes barcodes from a USB barcode scanner or keyboard adding matching products. Entering an empty string completes the action and gives the total.
7 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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WrapPanel
Positions child elements in sequential position from left to right, breaking content to the next line at the edge of the containing box. Tryable at http://tryfsharp.org
3 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Minesweeper Kata
Solution to Minesweeper Kata challenge at Goto Copenhagen 2012 conference "Programming with the Stars" track.
4 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Minesweeper Tweet
Minesweeper computation Kata as a tweet (140 characters) not counting code to open namespace and to prepare field as a 2D array.
6 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Befunge
Minimal Befunge-93 interpreter.
2 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Game of Life
Conway's Game of Life example at F#unctional Londoners July 2012 meetup.
2 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Hashtable
Readonly generic Hashtable class implementation example.
4 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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OData Type Provider to StackOverflow
References and type definition to open StackOverflow API over OData
6 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Reversi Kata solution
Reversi Kata solution from February 2013 London F# Meetup Coding Kata.
5 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Calculate PI using Monte Carlo
Estimate the value of PI using a Monte Carlo simulation.
5 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Generate WAVE file
Generates a WAVE sound file
10 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Missile Command playable in tsunami.io
Click on the tsunami.io button below to launch the online tsunami.io IDE with this snippet. Then select all the code (CTRL+A) and hit the Run button to start the game window, then just dock the window to the right of the code.. Click in the game window to launch missiles and save your cities.
3 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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ASCII Art
Blow up words to ASCII art with this 5x5 font
7 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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xBehave QuickStart sample
xBehave QuickStart sample direct conversion to F# from C#: https://github.com/xbehave/xbehave.net/wiki/Quickstart
1 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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xBehave Quickstart sample with custom operator
xBehave Quickstart sample conversion in F# using a custom operator: https://github.com/xbehave/xbehave.net/wiki/Quickstart https://github.com/xbehave/xbehave.net/wiki/Scenarios-with-examples
1 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Small Basic Interpreter
Small Basic abstract syntax tree, interpreter and embedded DSL. Supports Small Basic's keywords and arithmetic, logical and comparison operators.
11 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Hangman
Word guessing game using ASCII art.
10 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Turtle procedures
Minimal Logo implementation using FParsec with support for procedures.
8 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Rx vs Observable module vs Nessos Streams
Naive performance comparison of push model libraries: Reactive Extension (Rx), Observable module (built-in to F#) and Nessos Streams. Note: smaller numbers are better
12 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Paper snowflake
Transparent snowflake using polygons and rotational symmetry, based on paper and scissors method.
3 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Finite State Machine Compiler
Based on Uncle Bob's State Machine Compiler for Clean Code video series, parser implemented with FParsec, see https://github.com/unclebob/CC_SMC for Uncle Bob's Java implementation.
7 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Analyzing Government Data
F# Snippet based on Dave Crook's article "Intro to C# and Analyzing Government Data"; http://blogs.msdn.com/b/dave_crooks_dev_blog/archive/2015/04/20/intro-to-c-and-analyzing-government-data.aspx
2 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Flappy Bird clone using WPF
Flappy bird clone script using WPF, click the mouse or hit space to flap, no collision detection.
6 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Flappy Bird clone using Xwt
Flappy bird clone script using Mono's Xwt toolkit, click the mouse or hit space to flap, no collision detection. To run you will need to build xwt from source https://github.com/mono/xwt
3 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Top Trump
Top Trump petition signatures by constituency & their 2015 election results using F# Data's CSV & JSON providers
4 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Slicing with ArraySegment
Slicing arrays without copying using .Net's ArraySegment struct
2 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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List Remove trick
Extension methods to List<'T> (aliased ResizeArray<'T> in F#) that provide optimised item removal for unordered lists where item order is not significant.
5 people like this
Like the snippet!Posted: 8 years ago by Phillip Trelford
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Turtle with FParsec
FParsec parser and Windows Forms viewer for minimal Turtle DSL.
3 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Find HTML Page Titles
Finds potential page titles in a HTML page.
1 people like this
Like the snippet!Posted: 8 years ago by Phillip Trelford
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Turtle in Gtk#
Turtle interpreter example using Mono's Gtk# library with example paths for MonoDevelop (running on Linux) and Xamarin Studio (running on Mac and Windows).
2 people like this
Like the snippet!Posted: 7 years ago by Phillip Trelford
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PacMan Maze
PacMan maze view runnable inside TryFSharp.org
2 people like this
Like the snippet!Posted: 5 years ago by Phillip Trelford
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PDF Text Extract
Extracts text content from PDF file using PDFsharp.
3 people like this
Like the snippet!Posted: 3 years ago by Phillip Trelford
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Flappy Bird clone using WinForms
Flappy bird clone script using WinForms, click the mouse or hit space to flap, no collision detection.
6 people like this
Like the snippet!Posted: 2 years ago by Phillip Trelford
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Pseudoword generator
Pseudoword generator based on code from Evan Fosmark circa 2009.
0 people like this
Like the snippet!Posted: 2 months ago by Phillip Trelford
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Seq.unsort
Randomizes order of specified sequence
24 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Observable.Subject
The Subject
29 people like thistype implements both IObserver and IObservable . It is functionally equivalent to the type of the same name in the Reactive Extensions (Rx) library.
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Calculator
Simple Silverlight Calculator UI interactive sample runnable inside http://tryfsharp.org.
0 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Formula Calculator
Simple formula calculator including dynamic unit of measure support. Run as a script in Try F#, and try formula with units like 3m * 3m.
0 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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ReplaySubject
The ReplaySubject
3 people like thistype implements both IObserver and IObservable . It is functionally equivalent to the class of the same name in the Reactive Extensions (Rx) library with a replay buffer of a specified size .
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Still Mouse Click Event
Detects a mouse down then up event without a move.
4 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Times Table game
Simple times table console based game.
3 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Simple JS Calculator
Simple calculator application for adding numbers, compiles to JavaScript via Pit (v0.1) (http://pitfw.posterous.com). Run: http://trelford.com/PitCalculatorApp.htm
3 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Mini IoC Container
Minimal Inversion of Control (IoC) Container for Dependency Injection (DI) in under 100 lines of code. Implements the 3 Rs of DI: Register, Resolve, Release. Note: missing thread safety and fluent interface.
13 people like this
Like the snippet!Posted: 13 years ago by Phillip Trelford
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Baccarat
Shuffles a deck of cards, deals 2 hands applying punto banco rules before declaring a winner or a tie.
4 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Pong
Pong video game runnable inside TryFSharp.org. Player 1 keys 'Q' - up, 'A' - down. Player 2 keys 'P' - up, 'L' - down.
7 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Berzerk
Zombie state machine code sample. Use arrow keys to move humanoid. Robots activate when in range of humanoids. Try it out in the browser with TryFSharp.org.
6 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Minesweeper Kata 2
Solution to Minesweeper Kata second challenge at Goto Copenhagen 2012 conference "Programming with the Stars" track. Runnable at http://tryfsharp.org.
2 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Brainfuck
A minimal Brainfuck Interpreter (<30 lines) running Hello World!
6 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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PacMan
Single level retro game playable inside TryFsharp using the cursor keys.
9 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Phone number to words
Creates all possible mobile phone letter combinations from a number.
2 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Reversi Kata
Quick & dirty solution to Reversi kata: http://codingdojo.org/cgi-bin/wiki.pl?KataReversi
1 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Mocking library
F# Mocking library with a fluent interface Moq users should find familiar. Generate mocks for interfaces and abstract types. Supports mocking methods, properties and events. Specify arguments as wildcards or values to match. Define results as values, computed values or exceptions.
6 people like this
Like the snippet!Posted: 12 years ago by Phillip Trelford
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Eval Quotations
Evaluates a useful subset of F# quotations at run-time (without the F# PowerPack API).
15 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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A Happy Ending
Generates Text art in the style of Philippe Decrauzat's D.T.A.B.T.W.H.A.H.E. 2010 currently exhibited at the MoMA NYC
2 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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String.split
String split function that skips quoted strings, useful as a simple CSV parser
7 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Missile Command script (WPF)
WPF version of Missile Command. Run as a script in Visual Studio or create a new application project, reference the assemblies listed at the top of the script and paste the code over Program.fs and hit F5.
8 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Purge binary files
Purges files in bin and obj folders, useful to reduce size when copying project folders. Be careful, this script will delete files!
1 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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xBehave QuickStart sample with pipes
xBehave QuickStart sample conversion to F# from C# with some helper functions: https://github.com/xbehave/xbehave.net/wiki/Quickstart
1 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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Bank OCR
User Story 1 from the Bank OCR Kata: http://codingdojo.org/cgi-bin/wiki.pl?KataBankOCR
1 people like this
Like the snippet!Posted: 11 years ago by Phillip Trelford
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FSharp.Date examples
A few short usage examples for the FSharp.Date Type Provider (available on Nuget).
3 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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TAP runner
Test Anything Protocol runner for NUnit lets you run unit tests within an F# interactive session.
3 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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ASCII String
Type extensions for ASCII strings represented as byte arrays. Note: requires the F# 3.1 compiler.
3 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Koch snowflake
Script to render a Koch snowflake using a Windows Forms bitmap.
4 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Finite State Machine Parser
Based on Uncle Bob's State Machine Compiler for Clean Code video series, parser implemented with FParsec, see https://github.com/unclebob/CC_SMC for the Java implementation.
8 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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Mini SNOBOL Interpreter
Minimal SNOBOL abstract syntax tree (AST), interpreter and internal DSL (but no parser), just enough to run some simple samples from Wikipedia's SNOBOL page: http://en.wikipedia.org/wiki/SNOBOL and most of the pattern matching examples from the SNOBOL 4 Tutorial http://www.snobol4.org/docs/burks/tutorial/ch4.htm
2 people like this
Like the snippet!Posted: 10 years ago by Phillip Trelford
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ImmutableDictionary module
Functional programming operators related to the BCL ImmutableDictionary type.
5 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Flappy Bird clone using MonoGame
Flappy bird clone script using MonoGame, click the mouse or hit space to flap, no collision detection.
3 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Random Art
Drops 1000 randomly generated pictures in C:\temp. Based on Andrej Bauer's Random Art implementation: http://www.random-art.org/about/
3 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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BMP writer
Write BMP in ARGB uncompressed 32-bits per-pixel format
3 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Sierpinski Carpet
The Sierpinski carpet is a plane fractal first described by Wacław Sierpiński in 1916.
2 people like this
Like the snippet!Posted: 8 years ago by Phillip Trelford
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Multi-currency report
Multi-currency report (generated as HTML) based on example given at the start of chapter one of Kent Beck's Test-Driven Development by Example book.
4 people like this
Like the snippet!Posted: 9 years ago by Phillip Trelford
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Simple HTTP Server
Simple HTTP server, runs on .Net Core, .Net or Mono, and serves GET requests via a handler. The example given serves up static content from a specified directory.
7 people like this
Like the snippet!Posted: 8 years ago by Phillip Trelford
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Int32.tryParse
Converts the string representation of a number in-place to an Int32. A return value of None indicates the conversion failed.
4 people like this
Like the snippet!Posted: 7 years ago by Phillip Trelford
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Small Basic Parser
Small Basic abstract syntax tree, parser and interpreter. Supports Small Basic's keywords and arithmetic, logical and comparison operators.
8 people like this
Like the snippet!Posted: 6 years ago by Phillip Trelford
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Simple C# Parser
Simple prototype C# AST and parser using the FParsec parser combinator library. Parses a subset of C# 1.1 constructs.
8 people like this
Like the snippet!Posted: 4 years ago by Phillip Trelford
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Procedural Invaders
Procedurally generates a sheet of invader graphics
2 people like this
Like the snippet!Posted: 3 years ago by Phillip Trelford
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Simple F# Expression to Java compiler
Compiles simple F# quoted expressions (literals, values, operators, ifs and for loops) to Java code.
2 people like this
Like the snippet!Posted: 1 year ago by Phillip Trelford