# Reports:Tasks not implemented in Racket

**Awareness**

If

**Racket**is a language you like, or are interested in, please inform your fellow members of the Racket community; this page can't be emptied without your and their participation.

## Contents

## Not implemented[edit]

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

### A

### B

### C

- Calkin-Wilf sequence
- Canny edge detector
- Canonicalize CIDR
- Catmull–Clark subdivision surface
- Chaocipher
- Chernick's Carmichael numbers
- Circular primes
- Cistercian numerals
- Compare sorting algorithms' performance
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Cyclotomic polynomial

### D

### F

### I

### L

### M

### N

### P

- P-value correction
- Palindrome dates
- Palindromic gapful numbers
- Partition function P
- Peaceful chess queen armies
- Pell's equation
- Pierpont primes
- Playfair cipher
- Primality by Wilson's theorem
- Pseudo-random numbers/Combined recursive generator MRG32k3a
- Pseudo-random numbers/PCG32
- Pseudo-random numbers/Xorshift star

### R

### S

- SHA-256 Merkle tree
- SOAP
- Safe primes and unsafe primes
- Self numbers
- Sequence: nth number with exactly n divisors
- Sequence: smallest number greater than previous term with exactly n divisors
- Sequence: smallest number with exactly n divisors
- Sexy primes
- Smarandache prime-digital sequence
- Sort an outline at every level
- Sorting algorithms/Cocktail sort with shifting bounds
- Spelling of ordinal numbers
- Stirling numbers of the first kind
- Stirling numbers of the second kind
- Strong and weak primes
- Successive prime differences
- Suffixation of decimal numbers
- Super-d numbers

### 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 Racket (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

### C

### E

### F

### G

### L

### M

### N

### P

### R

- Random Latin squares
- Range modifications
- Raster bars
- Recursive descent parser generator
- Remote agent/Agent interface
- Remote agent/Agent logic
- Remote agent/Simulation
- Remove vowels from a string
- Resistance calculator
- Resistance network calculator
- Robots
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples

### S

### T

### U

### V

### W

## Requiring Attention[edit]

### Examples[edit]

These tasks have implementations in Racket, 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.

### Other pages[edit]

These are other pages related to Racket 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 Racket 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.