0.18.0

0.18.0 - 2026-02-05

Language

• Breaking Change - Subscripted range ⇡ now makes the range inclusive up to the maximum while still changing the start, rather than offsetting the entire range
  • This breaks all uses of subscripted range ⇡ other than ⇡₁
• Stabilize data functions
• Allow for multiple fill ⬚ values by returning multiple values from the fill function.
• Add anti ⌝by ⊸ for dyadic functions
• Add digit separators for number literals with ,. Ex: 123,456.078,9
• Rename stack ? to args ?
• Enable mutually recursive functions if one function is defined inside another
• Make sided fill ⬚ work with stencil ⧈
• Add sided subscripts for join ⊂, which joins with one side as the list
• Add numeric subscripts for classify ⊛, which classifies all subrows of a given rank
• Add numeric subscripts for table ⊛, which operates on all combinations of subrows of a given rank
• Add sided subscripts for stencil ⧈ for simpler chunking
• Add chained field accessors for data definitions
• anti ⌝ keep ▽ now accepts non-boolean integers
• parse ⋕ now ignores leading and trailing whitespace
• Stabilize evert ⧋ modifier
• Stabilize reciprocal ⨪ function
• Add compress function to compress arrays of bytes
• A function/constant and a module with the same name can now be in scope at the same time
• Allow ≁ for private imports/exports from modules
• Change reach ∪'s glyph
• Change how sided reach ∪ works
• Add shuf and shuffle aliases for un °sort ⍆
• Remove the 2-character ASCII aliases for comparison functions in favor of 2-letter aliases
  • These symbolic aliases created conflicts with other language syntax
  • != for not equals ≠ is now ne
  • <= for less or equal ≤ is now le
  • >= for greater or equal ≥ is now ge
• Add inc and dec aliases
• Add bw alias for backward ˜
• Add fla alias for deshape ♭, which is a prefix of flat
• Add eps/epsilon alias for ε, for easy access to the machine epsilon
• Stabilize un ° under ⍜
• Add json₅ for serializing to pretty JSON5
• Add &camlist function to list available webcams
  • &camcap may now take a webcam name instead of an index
• Add modifier version of gif, written as gif!
  • Operates similar to fold ∧
  • Encodes frames as they are generated
  • Good for when gif frames don't fit all at once in memory
• Add experimental noise function, which generates random noise from a seed and coordinates
• Add experimental &fetch function to easily fetch data from a url
• Add experimental monadic and triadic backward ˜
• Add experimental sided subscripts for under ⍜, which automatically dip ⊙ on net-positive second functions
• Add experimental fold ∧ function packs, which allows a condition to be specified for early termination. You can read more here
• Add mathematical constants φ (golden ratio) and γ (Euler-Mascheroni)
• Add PlanetSymbols and ZodiacSymbols constants, symbolic versions of Planets and Zodiac
• Add Elements and ElementSymbols constants listing the chemical elements
• Change experimental subscripted transpose ⍉ to transpose the first N axes
• Deprecate duplicate .
• Deprecate flip :
• Remove the previously deprecated signature promoting behavior of with ⤙ and off ⤚, allowing them to work on monadic functions
• Remove previously deprecated progressive indexof ⊘ function
• Remove previously deprecated tag function

Interpreter

• Upgrade to Rust 2024 edition
• Increase minimum Rust version to 1.88.0
• Many bug/crash fixes
• Compiled dependecies are now cached, increasing performance with large dependencies in the online pad and local LSP
• Gifs now use Floyd-Steinberg dithering rather than color quantization
  • It's both faster and looks better
• Add option to provide folder as test cases destination
• Add an Amen audio constant
• Add ogg support to audio
• Optimize evert ⧋ on pervasives
• Optimize °ₑ₂ and °ₑ₁₀ to be both faster and more correct
• Optimize ˙×⌵ on complex numbers to not do a square root
• Optimize ⊢⍆ and ⊣⍆ to be O(n)
• Extend table ⊞ list optimizations to non-lists
• Values generated on the same line in code will appear on the same line in output
• Add -i/--stdin flag to uiua run and uiua eval to pipe stdin to the first argument in a program
• Add - flag to uiua run to run stdin as a program
• Add gh: prefix for import strings to shorten GitHub imports
• Add support for multiline input in REPL by ending lines with a \
• Change map empty and tombstone characters to U+2ffff and U+2fffe

Website

• Reword all documentation and tutorials to no longer refer to a stack
  • Introduce argument manipulation modifiers earlier in the tutorial
• Remove hidden cases from tutorial challenges
• Pad links will automatically be compressed if it would be shorter
• Add gray color option for pad