daisy/TODO.md

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# TODO
Roadmap for fixes and features.
## Pre-release
- Commands (help, clear, reset, quit, list constants, list units)
- Documentation (usage)
- Documentation (comments)
- More units, better printing
- Unit tests
- Plural unit names
- Releases
- Unit substitutions
- mpg and gal replacement
## General
- CLI Options: version, help, evaluate
- Compile to WASM, publish a webapp
- Trigonometry & function tests
- Manpage
## Internals
- Non-recursive treeify
- Faster factorial function. Maybe use gamma instead?
- Remove extra calls to `.clone()` in quantity module
- Arbitrary precision float (rug doesn't offer arbitrary exponents)
- Backend-independent colorful printing
## Math Features
- Config file
- History to file
- Reference previous results
- Variable definitions
- Function definitions
- Dice
- Mean, Median, Min, Max: arrays and multi-argument functions
- Arbitrary base logarithm
- Derivatives
- CAS features (trig, roots and powers)
- Complex numbers
- acot/acoth functions
- Binary, hex, octal numbers
- Extra roots? (for convenience)
- Sums and products
- "per" as division?
- -> as "to"
- strip_unit function
## Prompt
- Live syntax/output (like firefox js terminal)
- Syntax highlight input and output
- fish-style tab completion
- Numbered expressions, history recall
- Better power printing