Reports:Tasks not implemented in Efene

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Awareness

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Not implemented

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

100 doors 24 game 24 game/Solve 99 Bottles of Beer A+B Abstract type Accumulator factory Ackermann function Active Directory/Connect Active Directory/Search for a user Active object Add a variable to a class instance at runtime Address of a variable Align columns Anagrams Anagrams/Deranged anagrams Animate a pendulum Animation Anonymous recursion Arbitrary-precision integers (included) Arena storage pool Arithmetic-geometric mean Arithmetic/Complex Arithmetic/Rational Arithmetic evaluation Arrays Assertions Associative arrays/Creation Associative arrays/Iteration Atomic updates Averages/Arithmetic mean Averages/Median Averages/Mode Averages/Pythagorean means Averages/Root mean square Averages/Simple moving average Balanced brackets Best shuffle Binary digits Binary search Binary strings Bitmap Bitmap/Bresenham's line algorithm Bitmap/Bézier curves/Cubic Bitmap/Bézier curves/Quadratic Bitmap/Flood fill Bitmap/Histogram Bitmap/Midpoint circle algorithm Bitmap/PPM conversion through a pipe Bitmap/Read a PPM file Bitmap/Read an image through a pipe Bitmap/Write a PPM file Bitwise IO Bitwise operations Boolean values Box the compass Brownian tree Bulls and cows Bulls and cows/Player CSV to HTML translation Caesar cipher Calendar Calendar - for "real" programmers Call a foreign-language function Call a function in a shared library Case-sensitivity of identifiers Catalan numbers Catmull–Clark subdivision surface Character codes Character matching Chat server Checkpoint synchronization Cholesky decomposition Classes Closest-pair problem Collections Color of a screen pixel Color quantization Colour bars/Display Colour pinstripe/Display Colour pinstripe/Printer Combinations Combinations with repetitions Command-line arguments Comments Compare sorting algorithms' performance Compile-time calculation Compound data type Concurrent computing Constrained genericity Constrained random points on a circle Continued fraction Conway's Game of Life Copy a string Count in factors Count in octal Count occurrences of a substring Count the coins Create a file Create a two-dimensional array at runtime Create an HTML table Create an object at a given address DNS query Date format Date manipulation Day of the week Deal cards for FreeCell Death Star Deconvolution/1D Deconvolution/2D+ Deepcopy Define a primitive data type Delegates Delete a file Detect division by zero Determine if a string is numeric Determine if only one instance is running Dinesman's multiple-dwelling problem Dining philosophers Discordian date Distributed programming Documentation Dot product Doubly-linked list/Definition Doubly-linked list/Element definition Doubly-linked list/Element insertion Doubly-linked list/Traversal Dragon curve Draw a cuboid Draw a sphere Dynamic variable names Echo server Element-wise operations Empty directory Empty program Empty string Enforced immutability Ensure that a file exists Enumerations Environment variables Equilibrium index Ethiopian multiplication Euler method Evaluate binomial coefficients Even or odd Events Evolutionary algorithm Exceptions Exceptions/Catch an exception thrown in a nested call Executable library Execute Brain**** Execute HQ9+ Execute SNUSP Execute a Markov algorithm Execute a system command Exponentiation operator Extend your language Extreme floating point values Factorial Factors of a Mersenne number Factors of an integer Fast Fourier transform Fibonacci sequence File IO File modification time File size Filter Find common directory path Find limit of recursion Find the missing permutation First-class functions First-class functions/Use numbers analogously First class environments Five weekends FizzBuzz Flatten a list Flow-control structures Forest fire Fork Formal power series Formatted numeric output Forward difference Four bit adder Fractal tree Function composition Function frequency GUI/Maximum window dimensions GUI component interaction GUI enabling/disabling of controls Galton box animation Gamma function Generic swap Globally replace text in several files

cont. Go Fish Gray code Grayscale image Greatest common divisor Greatest subsequential sum Greyscale bars/Display Guess the number Guess the number/With feedback Guess the number/With feedback (player) HTTP HTTPS HTTPS/Authenticated HTTPS/Client-authenticated Hailstone sequence Hamming numbers Handle a signal Happy numbers Hash from two arrays Haversine formula Hello world/Graphical Hello world/Line printer Hello world/Newline omission Hello world/Standard error Hello world/Web server Here document History variables Hofstadter-Conway $10,000 sequence Hofstadter Figure-Figure sequences Hofstadter Q sequence Holidays related to Easter Honeycombs Horizontal sundial calculations Horner's rule for polynomial evaluation Host introspection Hostname Hough transform Huffman coding Identity matrix Image convolution Image noise Include a file Increment a numerical string Infinity Inheritance/Multiple Inheritance/Single Input loop Integer sequence Interactive programming Introspection Inverted index Inverted syntax JSON Jensen's Device Joystick position K-means++ clustering Kaprekar numbers Keyboard input/Flush the keyboard buffer Keyboard input/Keypress check Keyboard input/Obtain a Y or N response Keyboard macros Knapsack problem/0-1 Knapsack problem/Bounded Knapsack problem/Continuous Knapsack problem/Unbounded Knight's tour Knuth's algorithm S Knuth shuffle LU decomposition LZW compression Langton's ant Last letter-first letter Leap year Least common multiple Letter frequency Levenshtein distance Linear congruential generator Literals/Floating point Literals/String Long multiplication Longest common subsequence Longest string challenge Look-and-say sequence Loops/Break Loops/Continue Loops/Do-while Loops/Downward for Loops/For Loops/For with a specified step Loops/Infinite Loops/N plus one half Loops/Nested Loops/While Lucas-Lehmer test Luhn test of credit card numbers MD5 MD5/Implementation Man or boy test Mandelbrot set Map range Matrix-exponentiation operator Matrix multiplication Matrix transposition Maze generation Maze solving Median filter Memory allocation Memory layout of a data structure Menu Metaprogramming Metered concurrency Metronome Miller-Rabin primality test Minesweeper game Modular exponentiation Monte Carlo methods Monty Hall problem Morse code Mouse position Multiple distinct objects Multiple regression Multiplication tables Multiplicative order Multisplit Mutex Mutual recursion N-queens problem Named parameters Narcissist Non-continuous subsequences Non-decimal radices/Convert Non-decimal radices/Input Non-decimal radices/Output Nth root Null object Number names Number reversal game Numeric error propagation Numerical integration Numerical integration/Gauss-Legendre Quadrature OLE Automation Object serialization One-dimensional cellular automata One of n lines in a file OpenGL Optional parameters Order two numerical lists Ordered Partitions Ordered words Palindrome detection Pangram checker Parallel calculations Parametric polymorphism Parametrized SQL statement Parsing/RPN calculator algorithm Parsing/RPN to infix conversion Parsing/Shunting-yard algorithm Partial function application Pascal's triangle Pascal's triangle/Puzzle Pattern matching Percentage difference between images Perfect numbers Permutation test Permutations Permutations/Derangements Pi Pick random element Pinstripe/Display Pinstripe/Printer Play recorded sounds Playing cards Plot coordinate pairs Pointers and references Polymorphic copy Polymorphism Polynomial long division Polynomial regression Power set Price fraction Primality by trial division Prime decomposition Priority queue Probabilistic choice Problem of Apollonius Program name Program termination Pythagorean triples QR decomposition Quaternion type Queue/Definition Queue/Usage Quine RCRPG

cont. Random number generator (device) Random number generator (included) Random numbers Range expansion Range extraction Rate counter Ray-casting algorithm Read a configuration file Read a file line by line Read a specific line from a file Read entire file Real constants and functions Record sound Reduced row echelon form Regular expressions Remove duplicate elements Rename a file Rendezvous Repeat a string Respond to an unknown method call Return multiple values Reverse a string Rock-paper-scissors Roman numerals/Decode Roman numerals/Encode Roots of a function Roots of a quadratic function Roots of unity Rosetta Code/Count examples Rosetta Code/Find unimplemented tasks Rosetta Code/Fix code tags Rosetta Code/Rank languages by popularity Rot-13 Run-length encoding Runtime evaluation Runtime evaluation/In an environment S-Expressions SEDOLs SHA-1 SOAP SQL-based authentication Safe addition Scope modifiers Search a list Secure temporary file Self-describing numbers Self-referential sequence Send email Sequence of non-squares Set Set consolidation Seven-sided dice from five-sided dice Shell one-liner Short-circuit evaluation Show the epoch Sierpinski carpet Sierpinski triangle Sierpinski triangle/Graphical Sieve of Eratosthenes Simple database Simple windowed application Simulate input/Keyboard Simulate input/Mouse Singleton Singly-linked list/Element definition Singly-linked list/Element insertion Singly-linked list/Traversal Sleep Sockets Sokoban Solve a Hidato puzzle Sort an array of composite structures Sort an integer array Sort disjoint sublist Sort stability Sort using a custom comparator Sorting algorithms/Bead sort Sorting algorithms/Bogosort Sorting algorithms/Bubble sort Sorting algorithms/Cocktail sort Sorting algorithms/Comb sort Sorting algorithms/Counting sort Sorting algorithms/Gnome sort Sorting algorithms/Heapsort Sorting algorithms/Insertion sort Sorting algorithms/Merge sort Sorting algorithms/Pancake sort Sorting algorithms/Permutation sort Sorting algorithms/Quicksort Sorting algorithms/Radix sort Sorting algorithms/Selection sort Sorting algorithms/Shell sort Sorting algorithms/Sleep sort Sorting algorithms/Stooge sort Sorting algorithms/Strand sort Soundex Special characters Special variables Speech synthesis Spiral matrix Stable marriage problem Stack Stack traces Stair-climbing puzzle Standard deviation Start from a main routine Stem-and-leaf plot String case String concatenation String interpolation (included) String length Strip a set of characters from a string 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 Substring/Top and tail Subtractive generator Sudoku Sum and product of an array Sum of a series Sum of squares Sutherland-Hodgman polygon clipping Symmetric difference Synchronous concurrency System time Table creation/Postal addresses Take notes on the command line Terminal control/Clear the screen Terminal control/Cursor positioning Terminal control/Dimensions Terminal control/Display an extended character Terminal control/Hiding the cursor Terminal control/Inverse video Terminal control/Preserve screen Terminal control/Ringing the terminal bell Ternary logic Test a function Text processing/1 Text processing/2 Text processing/Max licenses in use Thiele's interpolation formula Tic-tac-toe Time a function Tokenize a string Top rank per group Topological sort Towers of Hanoi Tree traversal Trigonometric functions Truncatable primes Truncate a file URL decoding URL encoding Unbias a random generator Undefined values Unicode strings Unicode variable names Update a configuration file Use another language to call a function User input/Graphical User input/Text Van der Corput sequence Variable-length quantity Variable size/Get Variable size/Set Variables Variadic function Vector products Verify distribution uniformity/Chi-squared test Verify distribution uniformity/Naive Vigenère cipher Walk a directory/Non-recursively Walk a directory/Recursively Web scraping Window creation Window creation/X11 Window management Wireworld Write float arrays to a text file Write to Windows event log XML/DOM serialization XML/Input XML/Output XML/XPath Xiaolin Wu's line algorithm Y combinator Yahoo! search interface Yin and yang Zig-zag matrix

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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 efene (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.

Addition-chain exponentiation Amb Append a record to the end of a text file AudioAlarm Audio Overlap Loop Balanced ternary Break OO privacy CRC-32 Call a function Call an object method Canny edge detector Chess player Closures/Variable capture Color quantization Conjugate transpose Convert decimal number to rational Create an object/Native demonstration Cut a rectangle Decision tables Dijkstra's algorithm Draw a clock Find URI in text Find first and last set bit of a long integer Function prototype Gaussian elimination Generalised floating point addition Generalised floating point multiplication Generator Hello world/Newbie IPC via named pipe IRC gateway

cont. Jump anywhere K-d tree Last Fridays of year Load animated 3D data MD4 Mad Libs Make a backup file Montgomery reduction Morpion solitaire Multiline shebang Natural sorting Odd word problem Old lady swallowed a fly OpenGL Pixel Shader Paraffins Parse EBNF Parse an IP Address Parse command-line arguments Pragmatic directives Proof RIPEMD-160 Ramsey Readline interface Remote agent/Agent interface Remote agent/Agent logic Remote agent/Simulation Remove lines from a file Resistor mesh Rosetta Code/Find bare lang tags Rosetta Code/Run examples Rosetta Code/Tasks sorted by average lines of code

cont. Run as a daemon or service Runge-Kutta method Scripted main Send an unknown method call Set of real numbers State name puzzle Statistics/Basic Statistics/Normal distribution Straddling checkerboard Subset sum problem Table creation Terminal control/Coloured text Terminal control/Cursor movement Terminal control/Positional read Terminal control/Unicode output Text to HTML Topological sort/Extracted top item Truth table Unicode polynomial equation User defined pipe and redirection operators Using a Speech engine to highlight words VList Video display modes Vigenère cipher/Cryptanalysis Voronoi diagram Waveform analysis/Doh ray me Waveform analysis/Top and tail Word wrap Write language name in 3D ASCII XOR Pattern Zebra puzzle

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Requiring Attention

Examples

These tasks have implementations in efene, 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.

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Other pages

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

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Not Considered

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

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End of List

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