# 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
- Cut a rectangle

### 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
- Pattern matching
- Penney's game
- Percolation/Bond percolation
- Percolation/Site percolation
- 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/PCG32
- Pseudo-random numbers/Xorshift star

### R

### S

- S-expressions
- Same fringe
- Scope/Function names and labels
- Self numbers
- Simple database
- Simulate input/Keyboard
- Simulate input/Mouse
- Singleton
- 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
- Substitution cipher
- Suffixation of decimal numbers
- Sum and product puzzle
- Synchronous concurrency

### T

### U

### 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

### B

### C

- CLI-based maze-game
- Card shuffles
- Changeable words
- Chebyshev coefficients
- Checksumcolor
- Chemical calculator
- Chess player
- Code segment unload
- Combinations with repetitions/Square digit chain
- 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)
- Cyclops numbers

### D

### F

### G

### I

### L

### M

### N

- N-body problem
- NYSIIS
- Names to numbers
- Native shebang
- Next special primes
- Number triplets game
- Numbers divisible by their individual digits, but not by the product of their digits.
- Numbers in base-16 representation that cannot be written with decimal digits
- Numbers in base 10 that are palindromic in bases 2, 4, and 16
- Numbers which binary and ternary digit sum are prime
- Numbers whose count of divisors is prime
- Numbers with prime digits whose sum is 13
- Numbers with same digit set in base 10 and base 16
- Numeric separator syntax
- Numerical integration/Adaptive Simpson's method

### O

### P

- Pandigital prime
- Parse EBNF
- Particle fountain
- Particle swarm optimization
- Penrose tiling
- Pentomino tiling
- Perceptron
- Peripheral drift illusion
- Permutations with some identical elements
- Permuted multiples
- Piprimes
- Positive decimal integers with the digit 1 occurring exactly twice
- Powerful numbers
- Practical numbers
- Price list behind API
- Prime numbers p which sum of prime numbers less or equal to p is prime
- Prime numbers which contain 123
- Prime triplets
- Prime words
- Primes which contain only one odd digit
- Primes whose first and last number is 3
- Primes with digits in nondecreasing order
- Print debugging statement
- Print itself
- Process SMIL directives in XML data
- Product of divisors
- Proof
- Pseudorandom number generator image

### R

- Railway circuit
- Ramanujan primes
- Range modifications
- Raster bars
- Readline interface
- Recursive descent parser generator
- 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
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples
- Run as a daemon or service

### S

- Safe mode
- Sattolo cycle
- Selective file copy
- Self-hosting compiler
- Separate the house number from the street name
- Show the (decimal) value of a number of 1s appended with a 3, then squared
- Simple turtle graphics
- Simulated annealing
- Singly-linked list/Element removal
- Smallest numbers
- Smallest square that begins with n
- Snake
- Snake and Ladder
- Solve a Rubik's Cube
- Solving coin problems
- Sorting algorithms/Cycle sort
- Sorting algorithms/Tree sort on a linked list
- Special pythagorean triplet
- Spoof game
- Square root by hand
- Starting a web browser
- Suffix tree
- Sum data type

### 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
- Three word location
- Time-based one-time password algorithm
- Topological sort/Extracted top item
- Transportation problem
- Tropical algebra overloading
- Two identical strings
- Two sum
- 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.