User:Kevin Reid/E tasks

This is Kevin Reid's personal classification of tasks not implemented in E, or just poorly done in E, by what kind of problem they are, or what kind of library/language work should come first. The presence of items on this list is managed by Task list updater.e (but is not automatically run); the classification is done manually.

Simple

• Averages/Median
• Averages/Pythagorean means
• Averages/Root mean square
• Doubly-linked list/Traversal
• Evaluate binomial coefficients
• Hailstone sequence
• Hamming numbers
• Horner's rule for polynomial evaluation

Language/library features

• Anonymous recursion
• Character matching
• Compile-time calculation
• Extreme floating point values
• Flow-control structures
• JSON (2 ways: terml and deJSONKit)

Algorithmic

• Arena storage pool (Covers both implementing an allocator, and using it to allocate physical memory... Do the first part perhaps.)
• Best shuffle
• Catmull–Clark subdivision surface
• Combinations with repetitions
• Closest-pair problem
• Equilibrium index
• Find common directory path
• Find the missing permutation
• Long multiplication
• Longest common subsequence
• Non-continuous subsequences
• Ray-casting algorithm
• Sorting algorithms/Bead sort
• Sorting algorithms/Comb sort
• Sorting algorithms/Pancake sort
• Sorting algorithms/Radix sort
• Sorting algorithms/Stooge sort

GUI

• GUI component interaction
• GUI enabling/disabling of controls
• Keyboard macros
• Mouse position
• Window management
• Play recorded sounds (classified here because we can borrow Java facilities in the EoJ case)
• User input/Graphical

Reflective

• Color of a screen pixel
• Simulate input/Keyboard
• Simulate input/Mouse

User interaction (unspecified type)

• Guess the number
• Guess the number/With feedback
• Guess the number/With feedback (player)

Graphics

• Brownian tree
• Constrained random points on a circle
• Dragon curve
• Fractal tree
• Plot coordinate pairs
• Image noise

Using Basic bitmap storage

• Bitmap/Bézier curves/Cubic
• Bitmap/Bézier curves/Quadratic
• Image convolution
• Bitmap/Histogram
• Grayscale image
• Median filter
• Bitmap/Midpoint circle algorithm
• Bitmap/PPM conversion through a pipe
• Bitmap/Read a PPM file
• Bitmap/Read an image through a pipe
• Xiaolin Wu's line algorithm

Other pixel processing

• Hough transform

Mathematics

• Formal power series (similar to Polynomial long division)
• improve Median (research better algorithms)
• Deconvolution/1D
• Deconvolution/2D+
• Hofstadter-Conway $10,000 sequence

Integers

• Factors of an integer
• Lucas-Lehmer test
• Multiplicative order
• Factors of a Mersenne number
• Seven-sided dice from five-sided dice

Numerics

• Gamma function
• Polynomial regression
• Multiple regression
• Roots of a quadratic function
• Roots of a function
• Sequence of non-squares
• Verify distribution uniformity/Naive
• Verify distribution uniformity/Chi-squared test

Operating system interfaces

• Globally replace text in several files
• Hello world/Line printer

Small projects

• 24 game
• Forest fire
• Four bit adder
• Horizontal sundial calculations
• Inverted index

Large projects

• 24 game/Solve
• Bulls and cows/Player
• Text processing/1
• Text processing/2
• RCRPG
• Execute a Markov algorithm
• Execute SNUSP
• Go Fish
• Huffman coding
• LZW compression
• Monty Hall problem
• Pascal's triangle/Puzzle
• Number names
• Roman numerals
• Sudoku

Rosetta Code processing

• Rosetta Code/Fix code tags
• Rosetta Code/Count examples
• Rosetta Code/Rank languages by popularity

Argue with

• Determine if only one instance is running

---

---

Needs a ... to be done well

Reflection toolkit

• Add a variable to a class instance at runtime

User-defined exceptions

• Exceptions/Catch an exception thrown in a nested call

Parser library

• Arithmetic evaluation ought to use one even if it's not technically required. (improve)

Iter/accum/stream tools

• N distinct objects (improve: needs better answer than accumulator)
• ...and many other tasks to improve

Vector type

• Dot product

Matrix type

• Matrix transposition
• Matrix-exponentiation operator
• Matrix multiplication
• Reduced row echelon form

Complex type

• Arithmetic/Complex
• Mandelbrot set
• Roots of unity

Rational type

• Arithmetic/Rational

Calendar

• Day of the week
• Date manipulation
• Date format
• Discordian date
• Five weekends
• Holidays related to Easter

Stream IO

• Bitwise IO

Console input

• A+B
• Keyboard Input/Determine if a key has been pressed at the terminal
• Keyboard Input/Flush the keyboard buffer
• Keyboard Input/Obtain a Y or N response
• Menu
• Input loop
• Create a two-dimensional array at runtime
• User input/Text

Sockets

• Chat server
• Echo server
• Sockets
• Hostname (improve: done by shell command, but should be done internally)

Operating system interfaces

• Secure temporary file
• Fork
• Handle a signal
• Time a function (improve: done EoJ; needs cross-platform)
• Terminal control/Clear the screen
• Terminal control/Determine the height and width of the terminal window
• Terminal control/Moving the cursor to a specific location on the screen

FFI

• Call a function in a shared library
• Call a foreign-language function
• Call a function from a foreign language
• OpenGL
• Host introspection (currently omitted)
• Create an object at a given address (currently omitted)

Database

• Table creation/Postal addresses
• SQL-based authentication

Protocol/language implementations

• Active Directory/Connect
• Active Directory/Search for a user
• SOAP
• Send email
• Window creation/X11

HTTP client

• HTTPS
• HTTPS/Authenticated
• HTTPS/Client-authenticated
• Yahoo! search interface

XML

• XML/Output
• XML/Input
• XML/XPath (improve: needs revisiting when E-XML is better)

Miscellaneous

• Formatted numeric output
• Write float arrays to a text file (same as Formatted Output)
• Regular expressions (need agreement on regexp substitution and regexp search-as-opposed-to-match)
• Sort stability (Need to find/write the documentation on this)
• Stack traces (cross-impl agreement)

Needs improvement

• Dynamic variable names (improve: Once environment-with is builtin, show using it together with interp.setTopScope)
• E-on-Java is flagged for something

Special cases

• Compare sorting algorithms' performance — waiting on Shell sort, Plot x, y arrays, Write float arrays to a text file, Polynomial regression

Notable omits

• Rendezvous (Hard to define what this means in E. Intervat perhaps? Is currently marked omit.)

Completed

To classify

Insert new tasks here.

• Knapsack problem/0-1
• Knapsack problem/Bounded
• Knapsack problem/Continuous
• Leap year
• Literals/Floating point
• Luhn test of credit card numbers
• MD5/Implementation
• Map range
• Maze generation
• Maze solving
• Metaprogramming
• Minesweeper game
• Morse code
• Multiple distinct objects
• N-queens problem
• Narcissist
• Non-decimal radices/Input
• Number reversal game
• Optional parameters
• Ordered words
• Parallel calculations
• Parametrized SQL statement
• Permutations
• Power set
• Price fraction
• Problem of Apollonius
• Random number generator (device)
• Random number generator (included)
• Range expansion
• Reverse a string
• Simple quaternion type and operations
• Sort an array of composite structures
• Soundex
• Stable marriage problem
• Stair-climbing puzzle
• Stem-and-leaf plot
• String concatenation
• String interpolation (included)
• Strip block comments
• Strip comments from a string
• Sutherland-Hodgman polygon clipping
• Symmetric difference
• Thiele's interpolation formula
• Truncatable primes
• Undefined values
• VList
• Variable-length quantity
• Wireworld
• Write to Windows event log