Tags
Algorithms (2)
- 25 Jun 2014 » Quicksort
- 16 Aug 2010 » Marriage Sort
Assembly (4)
- 21 May 2025 » Faster Leap Year?
- 19 Jun 2015 » Bit Test
- 26 Oct 2011 » Disassemble
- 29 Nov 2010 » Estimating CPU Speed
Backtrack (2)
- 11 Feb 2017 » $7.11
- 01 Jun 2015 » SEND + MORE = MONEY?
Books (1)
- 04 Nov 2024 » A Language A Day
Bowling (1)
- 30 Aug 2015 » Bowling Scores
Calendar (3)
- 09 May 2023 » Calendar Ranges
- 13 Jan 2012 » Friday the 13th
- 04 Jul 2011 » Fourth of July
Cgi (4)
- 08 Mar 2010 » Working with CGI: Part 4
- 03 Feb 2010 » Working with CGI: Part 3
- 02 Feb 2010 » Working with CGI: Part 2
- 20 Jan 2010 » Working with CGI: Part 1
Checksums (3)
- 12 Sep 2023 » SHA-256 from URL
- 22 Apr 2014 » Checksum Improvements
- 28 Mar 2011 » Unique Hash
Colors (8)
- 15 Jun 2025 » Color Prettyprint
- 29 Aug 2023 » RGBA Clock
- 02 Jun 2023 » Rainbows
- 03 May 2023 » Color Picker Game
- 09 Nov 2013 » ChuckNorris is a Color
- 01 Oct 2013 » Color Support
- 24 Sep 2012 » COLOR: <TAB>
- 25 Jan 2012 » Colored Timestamps
Comics (1)
- 14 Apr 2011 » XKCD
Command-Line (18)
- 23 May 2025 » Sorting IPv6
- 08 Aug 2024 » Cash Register
- 21 May 2024 » Argument Parser
- 09 May 2024 » STOMP
- 22 Nov 2013 » tree
- 06 Aug 2013 » uniq
- 02 Apr 2013 » move
- 11 Jan 2013 » which
- 23 Jul 2012 » xterm-256color
- 02 Feb 2012 » copy
- 30 Dec 2011 » Slot Machines
- 10 Nov 2011 » wc -l
- 06 Sep 2011 » echo
- 25 Mar 2011 » sum
- 27 Sep 2010 » Fortune-telling
- 21 Aug 2010 » Building "cat"
- 25 Feb 2009 » cd factor
- 18 Feb 2009 » Readline support for Factor
Compiler (4)
- 17 May 2025 » Even More Brainf*ck
- 16 May 2025 » More Brainf*ck
- 19 Jun 2015 » Bit Test
- 07 Jun 2009 » Brainf*ck
Data (1)
- 17 May 2010 » Creating Fake Data
Databases (2)
- 03 Jun 2025 » Bitcask
- 03 Apr 2010 » Connecting to Memcached
Duckduckgo (1)
- 15 Feb 2023 » DuckDuckGo
Ebnf (4)
- 17 May 2025 » Even More Brainf*ck
- 10 Aug 2011 » Printf
- 01 Jul 2010 » Rolling Dice
- 12 Aug 2009 » Calculating with EBNF
Example (2)
- 24 Dec 2016 » The Twelve Days of Christmas
- 07 Jul 2011 » 99 Bottles
Ffi (7)
- 12 Feb 2023 » Magic
- 23 Oct 2014 » cURL
- 09 Feb 2014 » inet_ntoa and inet_aton
- 26 Feb 2013 » Fast "shuffle"
- 02 Apr 2011 » Powers of 2
- 21 Feb 2011 » Gestalt
- 10 Jan 2011 » Trashing Files: Part 1 (Mac OS)
Files (17)
- 01 Mar 2023 » Geo Timezones
- 05 May 2015 » File Monitor
- 01 May 2015 » File Server
- 28 Apr 2015 » Writing MIDI Files
- 24 Apr 2015 » Reading MIDI Files
- 13 Jun 2014 » Filename Sanitization
- 28 Nov 2013 » tzfile
- 22 Nov 2013 » tree
- 15 Jul 2013 » Reading List
- 02 Apr 2013 » move
- 02 Feb 2012 » copy
- 03 Jan 2012 » Duplicate Files
- 11 Sep 2011 » Manipulating Files
- 13 Jan 2011 » Trashing Files: Part 3 (Windows)
- 12 Jan 2011 » Trashing Files: Part 2 (Unix)
- 10 Jan 2011 » Trashing Files: Part 1 (Mac OS)
- 29 Dec 2009 » Recursively Listing Files
Games (9)
- 27 May 2025 » Game of Life
- 20 May 2025 » Raylib
- 15 Sep 2024 » Battlesnake
- 13 Jul 2024 » BitGuessr
- 12 Feb 2018 » Minesweeper
- 06 Oct 2013 » Rock-paper-scissors
- 30 Dec 2011 » Slot Machines
- 12 Feb 2011 » Simple RPG
- 03 Aug 2010 » HAMURABI
Gemini (1)
- 16 Jan 2023 » Project Gemini
Geo (2)
- 01 Mar 2023 » Geo Timezones
- 06 Jul 2010 » Where am I? The 10:10 code...
Github (3)
- 24 Jan 2011 » GitHub Vanity
- 17 Nov 2010 » GitHub supports Factor!
- 25 Oct 2010 » Trending GitHub Projects
Google (4)
- 23 Sep 2013 » YouTube Downloader
- 15 May 2011 » Google Search
- 16 Mar 2011 » Google Translate
- 11 Mar 2011 » Google Charts
Gopher (3)
- 16 Jan 2023 » Project Gemini
- 27 Oct 2016 » Gopher Server
- 18 Dec 2014 » Gopher
Haiku (2)
- 08 Feb 2023 » Hipku
- 26 Aug 2015 » Haikunator
Help (1)
- 13 Jun 2023 » Easy Help
Http (1)
- 01 May 2015 » File Server
Io (1)
- 20 Aug 2011 » Unique
Language (12)
- 05 Dec 2024 » Zen of Factor
- 12 Nov 2024 » Finding Subsequences
- 11 Jul 2024 » Stack Complexity
- 21 Jan 2023 » Five Questions
- 18 Apr 2015 » Interpolate
- 01 Feb 2013 » Crafting Code in Factor
- 10 Sep 2012 » Watching Words
- 29 Aug 2012 » Literate Programming
- 13 Feb 2012 » Readability
- 19 Jul 2011 » One-Liners
- 12 Jul 2011 » Concatenative Thinking
- 05 Apr 2011 » Verbosity
Links (3)
- 15 Jan 2023 » Guided Tour of Factor
- 22 Nov 2014 » Factor Tutorial
- 15 Dec 2008 » Beginning Factor
Linux (2)
- 14 Aug 2015 » Desktop Background
- 19 Oct 2013 » Text-to-Speech
Macos (8)
- 28 Nov 2016 » AnyBar
- 14 Aug 2015 » Desktop Background
- 19 Oct 2013 » Text-to-Speech
- 10 Oct 2013 » AppleScript
- 15 Jul 2013 » Reading List
- 20 Apr 2011 » iPhone Backups
- 21 Feb 2011 » Gestalt
- 10 Jan 2011 » Trashing Files: Part 1 (Mac OS)
Macros (4)
- 10 Sep 2023 » Sequence Case
- 10 Aug 2011 » Printf
- 06 Aug 2011 » FizzBuzz
- 12 Aug 2009 » Calculating with EBNF
Math (80)
- 21 Jun 2025 » Jaro-Winkler
- 04 Jun 2025 » bab=aaa, bbb=bb
- 06 May 2025 » Recamán’s Sequence
- 26 Mar 2025 » Sports Betting
- 16 Dec 2024 » Random Derangement
- 08 Dec 2024 » Derangements
- 09 Jul 2024 » Random Distributions
- 11 Feb 2024 » Dragonbox
- 02 Feb 2024 » Divmods
- 15 Jan 2024 » Special Numbers
- 08 Sep 2023 » ASCII Art
- 03 Sep 2023 » LEB128
- 27 Aug 2023 » Drunken Bishop
- 25 Aug 2023 » Next Combination
- 21 Aug 2023 » Vigenère Cipher
- 03 Mar 2023 » Short UUID
- 19 Jan 2023 » GetPercentageRounds
- 26 Nov 2016 » Reverse Factorial
- 08 Aug 2016 » Cuckoo Filters
- 19 Sep 2015 » ISBN
- 06 Aug 2015 » Automated Reasoning
- 17 Jun 2015 » Compressed Sieve of Eratosthenes
- 08 Jun 2015 » Genuine Sieve of Eratosthenes
- 07 Jun 2015 » Sieve of Eratosthenes
- 29 Apr 2015 » Burrows-Wheeler Transform
- 16 Jan 2015 » Gödel Numbering
- 03 Dec 2014 » Binary Puzzle
- 02 Dec 2014 » Heaps
- 28 Nov 2014 » Prime Sextuplets
- 25 Jun 2014 » Quicksort
- 10 Jun 2014 » Comparing k-NN in Factor
- 05 Jun 2014 » 2 + 2 = 5
- 02 Jun 2014 » Pagination
- 24 Apr 2014 » Instant-runoff Voting
- 22 Jan 2014 » Caesar Cipher
- 13 Dec 2013 » Monte Carlo
- 04 Nov 2013 » Fast Factorial
- 14 Oct 2013 » Kahan Summation
- 22 Jul 2013 » Logistic Map
- 02 May 2013 » Non-repeating
- 15 Apr 2013 » Factorial
- 11 Apr 2013 » Bitwise permutations
- 25 Oct 2012 » The 3n+1 Problem
- 14 May 2012 » Finding Duplicate Numbers
- 19 Apr 2012 » Twin Primes
- 05 Apr 2012 » Faster Big Ratios!
- 30 Mar 2012 » Mega Millions
- 02 Mar 2012 » Next Permutation
- 31 Dec 2011 » Picomath
- 12 Oct 2011 » Optimizing 2^x
- 25 Sep 2011 » Approximating Pi
- 22 Sep 2011 » Really Big Numbers
- 20 Sep 2011 » Enigma Machines
- 24 Aug 2011 » Successor
- 14 Aug 2011 » Human Numbers
- 29 Jul 2011 » Robohash
- 23 Jul 2011 » Majority Vote
- 10 Jul 2011 » Substrings
- 17 May 2011 » Fibonacci Wars
- 08 Apr 2011 » Group By
- 02 Apr 2011 » Powers of 2
- 28 Mar 2011 » Unique Hash
- 23 Mar 2011 » Look and Say
- 18 Mar 2011 » Square?
- 04 Feb 2011 » Maximum/Minimum
- 06 Jan 2011 » Genetic Hello World
- 24 Oct 2010 » Longest Palindrome
- 13 Oct 2010 » Is Rotation?
- 06 Sep 2010 » Approximating Rationals
- 02 Sep 2010 » What can you get from 1, 2, 3, 4, +, -, *, /, and ^?
- 31 Aug 2010 » Floating-point Fractions
- 23 Aug 2010 » Calculator with GUI
- 05 Aug 2010 » Happy Numbers
- 25 Jul 2010 » New Combinatoric Functions
- 13 Jul 2010 » Side by Side: Chi-Square Functions
- 12 Jul 2010 » Curious? Factor to the rescue!
- 01 Jul 2010 » Rolling Dice
- 24 May 2010 » Evenly Partition an Integer
- 23 Dec 2008 » GCD
- 02 Oct 2008 » Clamp
Midi (2)
- 28 Apr 2015 » Writing MIDI Files
- 24 Apr 2015 » Reading MIDI Files
Morse (2)
- 28 Feb 2015 » Morse Code
- 11 Oct 2013 » Morse Palindromes?
Networking (41)
- 23 May 2025 » Sorting IPv6
- 18 Mar 2025 » RDAP
- 05 Nov 2024 » Removing Subdomains
- 09 May 2024 » STOMP
- 12 Sep 2023 » SHA-256 from URL
- 28 Feb 2023 » Reference Server
- 15 Feb 2023 » DuckDuckGo
- 16 Jan 2023 » Project Gemini
- 27 Oct 2016 » Gopher Server
- 01 May 2015 » File Server
- 18 Dec 2014 » Gopher
- 23 Oct 2014 » cURL
- 22 Jun 2014 » World Cup
- 05 Apr 2014 » Speedtest
- 09 Feb 2014 » inet_ntoa and inet_aton
- 18 Sep 2013 » ZeroMQ
- 12 Aug 2013 » Domai.nr
- 18 Oct 2012 » Parsing IPv4 Addresses
- 06 Aug 2012 » Echo Server
- 29 May 2012 » Wake-on-LAN
- 10 Jun 2011 » Yahoo! Finance
- 17 Apr 2011 » Mail with GUI
- 14 Apr 2011 » XKCD
- 12 Apr 2011 » Wikipedia over DNS
- 17 Feb 2011 » Port Knocking
- 15 Feb 2011 » Port Scanner
- 10 Feb 2011 » Ping? Pong!
- 27 Jan 2011 » Wolfram|Alpha using Factor
- 24 Jan 2011 » GitHub Vanity
- 19 Jan 2011 » Open URL
- 17 Jan 2011 » Reddit "Top"
- 25 Oct 2010 » Trending GitHub Projects
- 04 Sep 2010 » Internet Checksum
- 29 Apr 2010 » What time is it? Part 3
- 26 Apr 2010 » What time is it? Part 2
- 14 Apr 2010 » What time is it? Part 1
- 08 Mar 2010 » Working with CGI: Part 4
- 03 Feb 2010 » Working with CGI: Part 3
- 02 Feb 2010 » Working with CGI: Part 2
- 20 Jan 2010 » Working with CGI: Part 1
- 26 Jun 2009 » IPInfoDB
Parsing (16)
- 17 Jun 2025 » Dotenv
- 09 May 2024 » STOMP
- 31 Jan 2024 » Crontab
- 16 May 2023 » Offline Wikipedia
- 01 Mar 2023 » Geo Timezones
- 07 Feb 2023 » Proquint
- 24 Apr 2015 » Reading MIDI Files
- 21 Apr 2014 » Scraping Re: Factor
- 10 Dec 2013 » UU Encoding
- 28 Nov 2013 » tzfile
- 18 Nov 2013 » MessagePack
- 27 Jul 2013 » METAR
- 21 Feb 2012 » TXON
- 03 Sep 2011 » Fun with WAV
- 20 Mar 2011 » Typed Netstrings
- 16 Jul 2010 » Parsing Configuration Files
Pdf (2)
- 07 Mar 2023 » ASCII Table PDF
- 15 Oct 2010 » Text-to-PDF
Performance (18)
- 21 May 2025 » Faster Leap Year?
- 16 May 2025 » More Brainf*ck
- 12 May 2025 » Roman Sort
- 25 Aug 2023 » Next Combination
- 17 Jun 2015 » Compressed Sieve of Eratosthenes
- 08 Jun 2015 » Genuine Sieve of Eratosthenes
- 07 Jun 2015 » Sieve of Eratosthenes
- 02 Dec 2014 » Heaps
- 10 Jun 2014 » Comparing k-NN in Factor
- 05 Apr 2014 » Speedtest
- 04 Nov 2013 » Fast Factorial
- 22 Mar 2013 » Improved hash-sets
- 27 Feb 2013 » Faster "shuffle"
- 26 Feb 2013 » Fast "shuffle"
- 18 Sep 2012 » Faster Tables!
- 12 Oct 2011 » Optimizing 2^x
- 02 Apr 2011 » Powers of 2
- 06 Mar 2011 » Fast Now
Primes (3)
- 17 Jun 2015 » Compressed Sieve of Eratosthenes
- 08 Jun 2015 » Genuine Sieve of Eratosthenes
- 07 Jun 2015 » Sieve of Eratosthenes
Puzzles (4)
- 11 Feb 2017 » $7.11
- 05 Feb 2017 » Dirty Money: Code Challenge
- 01 Jun 2015 » SEND + MORE = MONEY?
- 03 Dec 2014 » Binary Puzzle
Random (9)
- 18 Jun 2025 » Best Shuffle
- 16 Dec 2024 » Random Derangement
- 09 Jul 2024 » Random Distributions
- 26 Feb 2023 » Weighted Random
- 17 Aug 2015 » Random Desktop Background
- 27 Feb 2013 » Faster "shuffle"
- 26 Feb 2013 » Fast "shuffle"
- 23 Oct 2012 » Select Random Lines
- 09 May 2012 » Random Name Generator
Reddit (1)
- 01 May 2011 » Reddit Stats
Regex (2)
- 04 Sep 2013 » Verbal Expressions
- 21 Mar 2011 » Names of Gaddafi
Release (7)
- 11 Sep 2024 » Factor 0.100 now available
- 24 Aug 2023 » Factor 0.99 now available
- 31 Jul 2018 » Factor 0.98 now available
- 02 Nov 2014 » Factor 0.97 now available
- 20 Apr 2013 » Factor 0.96 now available
- 30 Nov 2012 » New Logo
- 16 Aug 2012 » Factor 0.95 now available
Semver (1)
- 24 Jan 2023 » Semantic Versioning
Setup (1)
- 08 Jan 2011 » Configuration Files
Simd (1)
- 10 Nov 2011 » wc -l
Slides (1)
- 22 Oct 2010 » Presentations in Factor
Sorting (5)
- 12 May 2025 » Roman Sort
- 30 Mar 2025 » Human Sorting Improved
- 25 Jun 2014 » Quicksort
- 04 Feb 2011 » Maximum/Minimum
- 16 Aug 2010 » Marriage Sort
Spelling (2)
- 07 Feb 2013 » Typoglycemia
- 26 Mar 2010 » How to Write a Spelling Corrector
Syntax (17)
- 18 May 2025 » Shuffle Syntax
- 03 Dec 2024 » Watching Code
- 29 Oct 2024 » Constants
- 13 Oct 2024 » Emit
- 05 Jun 2024 » Bend
- 16 Nov 2023 » Stack Effects
- 26 Oct 2023 » Memoization Syntax
- 10 Sep 2023 » Sequence Case
- 15 Jul 2016 » Backticks
- 10 Jun 2014 » Swift Ranges
- 05 Jun 2014 » 2 + 2 = 5
- 29 Aug 2012 » Literate Programming
- 22 Jan 2011 » Todo Lists
- 14 Jan 2011 » Setting Attributes
- 11 Aug 2010 » "Maybe" Accessor
- 06 Aug 2010 » Fat Arrows
- 01 Jul 2010 » Rolling Dice
Terminal (1)
- 26 Apr 2013 » Terminfo
Text (23)
- 05 May 2023 » Case Conversion
- 04 May 2023 » Unicode
- 07 Mar 2023 » ASCII Table PDF
- 19 Sep 2015 » ISBN
- 11 Sep 2015 » Pig Latin
- 28 Oct 2013 » Text Summary
- 19 Oct 2013 » Text-to-Speech
- 11 Oct 2013 » Morse Palindromes?
- 07 Feb 2013 » Typoglycemia
- 28 Dec 2011 » Elementology
- 28 Aug 2011 » Thesaurus
- 14 Aug 2011 » Human Numbers
- 15 Jul 2011 » Detecting Plagiarism
- 10 Jul 2011 » Substrings
- 29 Jun 2011 » TF-IDF
- 24 Oct 2010 » Longest Palindrome
- 15 Oct 2010 » Text-to-PDF
- 09 Aug 2010 » Anagrams
- 04 Aug 2010 » Text-or-Binary?
- 14 Jul 2010 » Flipping text upside-down
- 30 Dec 2009 » Counting Word Frequencies
- 27 Dec 2009 » Generating Text in Factor
- 09 Dec 2008 » wp.factor
Time (10)
- 31 Jan 2024 » Crontab
- 29 Aug 2023 » RGBA Clock
- 01 Mar 2023 » Geo Timezones
- 06 Jul 2016 » Clock Angles
- 28 Nov 2013 » tzfile
- 14 May 2010 » Time Spans for Humans
- 13 May 2010 » Relative Time for Humans
- 29 Apr 2010 » What time is it? Part 3
- 26 Apr 2010 » What time is it? Part 2
- 14 Apr 2010 » What time is it? Part 1
Ui (14)
- 27 May 2025 » Game of Life
- 20 May 2025 » Raylib
- 13 Nov 2024 » Listener Font Sizes
- 17 Oct 2024 » Base16 Themes
- 01 May 2024 » Time My Meeting
- 01 Sep 2023 » Periodic Table
- 29 Aug 2023 » RGBA Clock
- 03 May 2023 » Color Picker Game
- 12 Feb 2018 » Minesweeper
- 15 Nov 2012 » Retina Displays
- 05 May 2011 » Open URL (in Listener)
- 17 Apr 2011 » Mail with GUI
- 08 Sep 2010 » Visual REPL
- 23 Aug 2010 » Calculator with GUI
Unicode (3)
- 22 Mar 2025 » Base256Emoji
- 05 May 2023 » Case Conversion
- 04 May 2023 » Unicode
Unix (1)
- 12 Jan 2011 » Trashing Files: Part 2 (Unix)
Urls (3)
- 20 Apr 2015 » Long URLs
- 05 May 2011 » Open URL (in Listener)
- 19 Jan 2011 » Open URL
Uuid (1)
- 03 Mar 2023 » Short UUID
Voting (1)
- 24 Apr 2014 » Instant-runoff Voting
Web (8)
- 15 Sep 2024 » Battlesnake
- 17 May 2023 » ZIM Builder
- 16 May 2023 » Offline Wikipedia
- 28 Aug 2010 » Hello, web!
- 08 Mar 2010 » Working with CGI: Part 4
- 03 Feb 2010 » Working with CGI: Part 3
- 02 Feb 2010 » Working with CGI: Part 2
- 20 Jan 2010 » Working with CGI: Part 1
Wikipedia (3)
- 16 May 2023 » Offline Wikipedia
- 19 Dec 2012 » Today In History
- 12 Apr 2011 » Wikipedia over DNS
Windows (3)
- 14 Aug 2015 » Desktop Background
- 19 Oct 2013 » Text-to-Speech
- 13 Jan 2011 » Trashing Files: Part 3 (Windows)
Yahoo (1)
- 10 Jun 2011 » Yahoo! Finance