# Reports:Tasks not implemented in Wolfram Language

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## Contents

## Not implemented[edit]

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

### A

### C

- Calendar - for "REAL" programmers
- Call an object method
- Chat server
- Check input device is a terminal
- Check output device is a terminal
- Checkpoint synchronization
- Church numerals
- Classes
- Colour pinstripe/Printer
- Commatizing numbers
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/lexical analyzer
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Constrained genericity
- Copy stdin to stdout
- Create a file on magnetic tape
- Create an object at a given address

### E

### F

### L

### M

### P

- P-Adic numbers, basic
- P-Adic square roots
- P-value correction
- Pancake numbers
- Parse an IP Address
- Parsing/RPN to infix conversion
- Particle fountain
- Penney's game
- Pentomino tiling
- Percolation/Bond percolation
- Percolation/Site percolation
- Peripheral drift illusion
- Perlin noise
- Pig the dice game/Player
- Pinstripe/Printer
- Pisano period
- Pointers and references
- Poker hand analyser
- Polymorphic copy
- Polymorphism
- Primes - allocate descendants to their ancestors
- Pseudo-random numbers/Combined recursive generator MRG32k3a
- Pseudo-random numbers/Middle-square method
- Pseudo-random numbers/PCG32
- Pseudo-random numbers/Xorshift star

### R

### S

- S-expressions
- Same fringe
- Scope/Function names and labels
- Search in paragraph's text
- Selectively replace multiple instances of a character within a string
- Simple database
- Simple turtle graphics
- Simulate input/Keyboard
- Simulate input/Mouse
- Singleton
- Snake
- Sokoban
- Sort an outline at every level
- Sorting algorithms/Patience sort
- Spelling of ordinal numbers
- Square form factorization
- Straddling checkerboard
- Strassen's algorithm
- Stream merge
- Sudan function
- Suffixation of decimal numbers
- Sum and product puzzle
- Synchronous concurrency

### T

### U

### V

### Draft tasks without implementation[edit]

These tasks are drafts, meaning they largely need more work to turn them into full tasks. Perhaps you can help by trying to implement them in Wolfram Language (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.

### A

- A* search algorithm
- ABC words
- ADFGVX cipher
- Addition-chain exponentiation
- Addition chains
- Air mass
- Anadromes
- Anagram generator
- Arithmetic coding/As a generalized change of radix
- Arithmetic derivative
- Aspect oriented programming
- Assertions in design by contract
- Audio alarm
- Audio frequency generator
- Audio overlap loop
- Autogram checker

### B

### C

- CLI-based maze-game
- Camel case and snake case
- Card shuffles
- Changeable words
- Chebyshev coefficients
- Checksumcolor
- Chemical calculator
- Chess player
- Code Golf: Code Golf
- Code segment unload
- Combinations with repetitions/Square digit chain
- Compiler/Preprocessor
- Compiler/Simple file inclusion pre processor
- Compiler/Verifying syntax
- Conjugate a Latin verb
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n)
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
- Create an executable for a program in an interpreted language
- Create your own text control codes
- Cross compilation
- Cycles of a permutation

### D

### F

### G

### I

### L

### M

- Make a backup file
- Marching squares
- Markov chain text generator
- Matrix with two diagonals
- Minimum number of cells after, before, above and below NxN squares
- Montgomery reduction
- Morpion solitaire
- Mosaic matrix
- Most frequent k chars distance
- Multidimensional Newton-Raphson method
- Multiline shebang
- Multiton

### N

### P

- Pan base non-primes
- Pandigital prime
- Parse EBNF
- Particle swarm optimization
- Penrose tiling
- Perceptron
- Permuted multiples
- Polynomial derivative
- Powerful numbers
- Practical numbers
- Price list behind API
- Print debugging statement
- Print itself
- Process SMIL directives in XML data
- Proof
- Pseudorandom number generator image

### R

- Railway circuit
- Range modifications
- Raster bars
- Readline interface
- Recursive descent parser generator
- Red black tree sort
- Remote agent/Agent interface
- Remote agent/Agent logic
- Remote agent/Simulation
- Resistance calculator
- Resistance network calculator
- Reverse the gender of a string
- Reverse the order of lines in a text file while preserving the contents of each line
- Robots
- Rodrigues’ rotation formula
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples
- Round-robin tournament schedule
- Run as a daemon or service

### S

- Safe mode
- Sanitize user input
- Sattolo cycle
- Segmentation fault protection
- Selective file copy
- Self-hosting compiler
- Separate the house number from the street name
- Simulated annealing
- Singly-linked list/Element removal
- Snake and ladder
- Solve a Rubik's cube
- Solve equations with substitution method
- Solve hanging lantern problem
- Solving coin problems
- Sorting algorithms/Cycle sort
- Sorting algorithms/Tree sort on a linked list
- Spoof game
- Square root by hand
- Starting a web browser
- Steady squares
- Suffix tree
- Sum data type
- Sum of square and cube digits of an integer are primes

### T

- Tamagotchi emulator
- Terminal control/Restricted width positional input/No wrapping
- Terminal control/Restricted width positional input/With wrapping
- Text between
- Text completion
- Text to HTML
- The ISAAC cipher
- Three word location
- Time-based one-time password algorithm
- Topological sort/Extracted top item
- Transliterate English text using the Greek alphabet
- Transportation problem
- Tropical algebra overloading
- Type detection

### U

### W

## Requiring Attention[edit]

### Examples[edit]

These tasks have implementations in Wolfram Language, 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.

### No pages found.

### Other pages[edit]

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

### No pages found.

## Not Considered[edit]

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

### No pages found.

## End of List[edit]

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