Reports:Tasks not implemented in Common Lisp

Automatically Generated: This result set should be accurate to within fifteen minutes of the last viewing.

Awareness

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Not implemented

These are currently not implemented in Common Lisp. Please implement some if you can. If any tasks are not possible or too complex in Common Lisp, they should not be on this list. To mark a task as such, add {{omit from|Common Lisp}}, preserving the capitalization of the language, to that task. It will appear below under the "Not Considered" section.

9 9 billion names of God the integer A Active Directory/Connect Active Directory/Search for a user Active object Animate a pendulum Arena storage pool Atomic updates Average loop length Averages/Mean time of day B Benford's law Bitcoin/address validation Bitmap/Bézier curves/Cubic Bitmap/Bézier curves/Quadratic Bitmap/Flood fill Bitmap/Histogram Bitmap/PPM conversion through a pipe Bitmap/Read an image through a pipe Bitwise IO Box the compass Brownian tree Bulls and cows/Player C CSV data manipulation Calendar Calendar - for "real" programmers Call a function Call an object method Canny edge detector Carmichael 3 strong pseudoprimes Catalan numbers/Pascal's triangle Catmull–Clark subdivision surface Chat server Check Machin-like formulas Checkpoint synchronization Circles of given radius through two points Color quantization Colour bars/Display Colour pinstripe/Printer Combinations with repetitions Compare sorting algorithms' performance Conjugate transpose Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N) Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N1, Contined Fraction N2) Create a file on magnetic tape Create an HTML table Create an object at a given address D Date manipulation Death Star Deconvolution/2D+ Determine if only one instance is running Digital root Dinesman's multiple-dwelling problem Discordian date Distributed programming Doubly-linked list/Traversal Draw a cuboid Draw a sphere Dutch national flag problem E Empty directory Enforced immutability Events Executable library Execute SNUSP Extreme floating point values F Fast Fourier transform Fibonacci n-step number sequences Fibonacci word Fibonacci word/fractal Find common directory path Find largest left truncatable prime in a given base Find the last Sunday of each month First class environments Five weekends Flow-control structures Four bit adder Fractal tree Function frequency G GUI/Maximum window dimensions GUI component interaction GUI enabling/disabling of controls Galton box animation Globally replace text in several files Go Fish Greyscale bars/Display Guess the number/With feedback (player) H HTTPS/Authenticated HTTPS/Client-authenticated Handle a signal

H cont. Harshad or Niven series Hello world/Line printer Here document History variables Honeycombs Horizontal sundial calculations Hough transform I Image convolution Include a file J Joystick position Jump anywhere K K-d tree K-means++ clustering Keyboard input/Flush the keyboard buffer Keyboard input/Keypress check Keyboard macros Knapsack problem/Continuous Knight's tour L Largest int from concatenated ints Last Friday of each month Literals/Floating point Longest string challenge Lucas-Lehmer test M MD4 MD5/Implementation Mad Libs Main step of GOST 28147-89 Mandelbrot set Matrix arithmetic Maze solving Median filter Memory layout of a data structure Metered concurrency Metronome Modular inverse Morse code Mouse position Multiplicative order Multisplit Mutex N Nautical bell Numeric error propagation O OLE Automation OpenGL Operator precedence P Paraffins Parallel calculations Parametrized SQL statement Parsing/RPN calculator algorithm Parsing/RPN to infix conversion Parsing/Shunting-yard algorithm Pascal's triangle/Puzzle Percolation/Bond percolation Percolation/Mean run density Percolation/Site percolation Permutations/Derangements Permutations by swapping Pi Pick random element Pinstripe/Display Pinstripe/Printer Play recorded sounds Plot coordinate pairs Price fraction Priority queue Problem of Apollonius Q Quaternion type Quickselect algorithm R RIPEMD-160 Random number generator (device) Random number generator (included) Read a configuration file Record sound Rendezvous Resistor mesh Rock-paper-scissors Rosetta Code/Count examples Rosetta Code/Find bare lang tags Rosetta Code/Find unimplemented tasks Rosetta Code/Fix code tags Rosetta Code/Rank languages by popularity S SHA-256 SOAP SQL-based authentication Safe addition Same Fringe Scope/Function names and labels

S cont. Secure temporary file Semordnilap Send email Set consolidation Set of real numbers Set puzzle Sierpinski triangle/Graphical Simulate input/Keyboard Simulate input/Mouse Sokoban Solve a Hidato puzzle Sort disjoint sublist Sorting algorithms/Bead sort Sorting algorithms/Comb sort Sorting algorithms/Radix sort Sorting algorithms/Sleep sort Sorting algorithms/Stooge sort Sparkline in unicode Special characters Special variables Speech synthesis Stable marriage problem Start from a main routine Stem-and-leaf plot String append String comparison String matching String prepend Strip block comments Strip comments from a string Strip control codes and extended characters from a string Strip whitespace from a string/Top and tail Substring/Top and tail Sum multiples of 3 and 5 Sutherland-Hodgman polygon clipping T Table creation/Postal addresses Take notes on the command line Temperature conversion Terminal control/Clear the screen Terminal control/Coloured text Terminal control/Cursor movement Terminal control/Cursor positioning Terminal control/Dimensions Terminal control/Display an extended character Terminal control/Hiding the cursor Terminal control/Inverse video Terminal control/Positional read Terminal control/Preserve screen Terminal control/Ringing the terminal bell Terminal control/Unicode output Test a function Text processing/2 Tic-tac-toe Topic variable Topswops Trabb Pardo–Knuth algorithm Truncatable primes Truncate a file Twelve statements U URL decoding URL encoding Unicode strings Universal Turing machine Update a configuration file Use another language to call a function V Vampire number Variable-length quantity Variable size/Set Variables Verify distribution uniformity/Chi-squared test Video display modes Vigenère cipher/Cryptanalysis Visualize a tree Vogel's approximation method Voronoi diagram W Window management Word wrap Write language name in 3D ASCII Write to Windows event log X Xiaolin Wu's line algorithm Y Yahoo! search interface Yin and yang Z Zebra puzzle Zeckendorf arithmetic Zhang-Suen thinning algorithm

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Draft tasks without implementation

These tasks as drafts, meaning they largely need more work to turn them into full tasks. Perhaps you can help by trying to implement them in Common Lisp (after all, one of the key requirements for a task being non-draft is multiple implementations, preferably in widely different languages) but be aware that this may be difficult because of lack of definition of the task itself.

9 9 billion names of God the integer/Worship of false idols A ASCII art diagram converter AVL tree Addition-chain exponentiation Append a record to the end of a text file AudioAlarm Audio Overlap Loop Audio frequency generator B Banker's algorithm Base64 encode data Bilinear interpolation Birthday problem Bitcoin/public point to address Blackjack strategy Boids simulation C Catamorphism Check input device is a terminal Check output device is a terminal Chess player Code segment unload Combinations and permutations Convert decimal number to rational Create an object/Native demonstration D Decision tables Deming's Funnel Dijkstra's algorithm Draw a clock E Elliptic curve arithmetic Entropy/Narcissist F FASTA format Find URI in text Find duplicate files Find first and last set bit of a long integer Flipping bits game

G Game of Nim Gaussian elimination Generalised floating point addition Generalised floating point multiplication H Hash join Hello world/Newbie I IBAN IPC via named pipe IRC gateway Implicit type conversion Input/Output for Pairs of Numbers L Levenshtein distance/Alignment Load animated 3D data M Modular arithmetic Montgomery reduction Morpion solitaire Musical scale N NYSIIS Native shebang Natural sorting Nonogram solver O Old Russian measure of length Old lady swallowed a fly OpenGL Pixel Shader P Parse EBNF Parse an IP Address Parse command-line arguments Percolation/Mean cluster density Permutations/Rank of a permutation Permutations with repetitions Playfair cipher Poker hand analyser Proof R Ramsey's theorem

R cont. Read a file character by character/UTF8 Readline interface Remote agent/Agent interface Remote agent/Agent logic Remote agent/Simulation Rep-string Reverse the gender of a string Rosetta Code/List authors of task descriptions Rosetta Code/Run examples Rosetta Code/Tasks sorted by average lines of code Run as a daemon or service Runge-Kutta method S Shortest common supersequence Solving coin problems Sorting algorithms/Patience sort Statistics/Basic Statistics/Normal distribution Straddling checkerboard Subset sum problem Suffix tree T Table creation Terminal control/Restricted width positional input/No wrapping Terminal control/Restricted width positional input/With wrapping Text to HTML Topological sort/Extracted top item Transportation problem Truth table U Unicode polynomial equation Untrusted environment User defined pipe and redirection operators Using a Speech engine to highlight words V VList W Waveform analysis/Doh ray me Waveform analysis/Top and tail

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Requiring Attention

Examples

These tasks have implementations in Common Lisp, but somebody, somewhere, decided that the example implementation was faulty or in some other way requiring attention. If you're familiar with the task and language, please consider reviewing/correcting the example and removing the notice.

F

• Factors of a Mersenne number

W

• Window creation/X11

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Other pages

These are other pages related to Common Lisp which require attention; with your knowledge and assistance, we can improve the quality of the site's content.

C

• CMUCL

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Not Considered

These tasks are not generally counted toward "unimplemented", as somebody, somewhere, decided that Common Lisp was inappropriate for these tasks, or implementations of them would be unenlightening. Feel free to try your hand at them anyway.

A

• Address of a variable

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End of List

Again, feel free to try your hand at any of the tasks listed on this page.