CHANGELOG.md

Revision history for Nekomata

0.8.0.0 -- Unreleased

• New builtin: \lastValue.
• A new mode last is added. It outputs the last possible result. You can switch to this mode by the -t flag in the command line or the \Mode last command in the REPL.
• Now input can have leading and trailing spaces. The interpreter will trim them when parsing.
• Now Nekomata can be built with GHC 9.10.1, thanks to an update of the haskeline package.

Breaking changes

• \oneValue is renamed to \firstValue.
• The built-in function \normalForm was removed in version 0.7.0.0. Its short name ¤ is now reused for the new function \lastValue.

0.7.0.0 -- 2024-08-10

• Added examples to the documentation of built-in functions and particles.
• Fixed some errors in the documentation.
• Fixed a bug in \binomial. Now it returns 0 when the second argument is negative.
• Fixed a bug in \factor. In earlier versions, it may return incorrect results.
• New particles: \concatMap, \fixedPoint, \onAny, \unconcatMap.

Breaking changes

• Some modules in the library are no longer exposed.
• The built-in function \normalForm is removed, because it is never used, and its semantics are not well-defined.
• The result of \divisors is now sorted.
• \intersect and \union are now multiset intersection and union.
• \bifurcate now works on numbers. If the input is a number, it is converted to the range from 0 to the number - 1.

0.6.1.0 -- 2024-06-07

• Now the REPL saves the history to a file named .history in the current directory.
• New built-in functions: \isLong, \sumEach.

Breaking changes

• \charToInt now leaves the argument unchanged if it is already an integer. It still fails if the argument is a non-integral number.
• \intToChar now leaves the argument unchanged if it is already a character.

0.6.0.0 -- 2024-02-25

• Updated some dependencies. Now Nekomata can be built with GHC 9.8.1.
• Fixed a bug in printing truncated results.
• Now characters are internally represented as Word8s instead of Chars.
• Added a REPL command \Arity to print the arity of a function.
• New built-in functions: \elem, \filterBy, \minValue, \minMax, \maxValue, \ordering, \pad, \slices.

Breaking changes

• \apply2 is renamed to \onBoth.
• \interval can now take two chars as arguments.
• \intersect, \union and \setMinus now convert numbers and characters to singleton lists.
• Fixed a bug in comparing characters. Now characters are compared by their code points in Nekomata's custom code page instead of Unicode.

0.5.1.0 -- 2023-09-27

• New built-in functions: \bifurcate, \divMod, \flatten, \histogram, \isBig, \isSmall, \over, \popCount, \rle, \unrle.
• New particle: \zipWithTrunc.

Breaking changes

• \nonzero is renamed to \isNonzero.
• \nonempty is renamed to \isNonempty.

0.5.0.0 -- 2023-09-02

• The interpreter can now limit the number of results to show using the -l option.
• New built-in functions: \bitAnd, \bitOr, \bitXor, \fromBinary, \gt, \lt.

Breaking changes

• The dependency on base becomes base >=4.15 && <5. Now GHC 9.0.1 or newer is required to build Nekomata.
• The string type is removed, and a new character type is added. Now strings are represented as lists of characters. Many built-in functions are changed accordingly.
• \join and concat no longer convert their arguments to strings. Now they convert numbers and characters to singleton lists.
• Many numeric functions now convert chars to their code points before operating on them.
• \range0 now generates a range from 0 to ceil(n)-1 instead of floor(n)-1.
• \join, \concat, \cons and \snoc are now lazier. Joining a non-failing list with a failing list no longer fails immediately. Instead, it only fails when the failing part is actually used. \concat can now concatenate an infinite list of lists.
• \uninterleave is now lazier. It can now uninterleave an infinite list.

0.4.1.0 -- 2023-07-22

• New built-in functions: \fromDigits, \interval, \read, \show, \tuple.
• New particle: \fold1.

0.4.0.0 -- 2023-07-10

• The language is still incomplete. The code page isn't filled yet. Everything is subject to change.
• New built-in functions: \absDiff, \count, \digits, \div2, \divisors, \interleave, \isNonnegative, \isUnique, \mod2, \mul2, \powOf2.
• New particle: \firstInt.

Breaking changes

• Some list functions are now overloaded to work on numbers. When they are used on numbers, they are applied to the range from 0 to the number - 1. These functions are: \anyOf, \uninterleave, \extract, \permutation, \prefix, \reverse, \rotate, \setPartition, \split, \subsequence, \subset, \suffix, \unconcat.
• \convolve now supports arbitrary-dimensional nested lists. Numbers are treated as 0-dimensional nested lists.
• \mapFirst is renamed to \mapWith.
• \deinterleave is renamed to \uninterleave.

0.3.5.0 -- 2023-06-12

• New built-in functions: \deinterleave, \longest, \maximumBy, \minimumBy, \orNeg, \shortest, \unitVec2D.
• New particle: \lengthWhile.

Breaking changes

• \toBase2Rev is renamed to \binary.

0.3.4.0 -- 2023-06-07

• New built-in functions: \andThen, \chunks, \convolve, \extract, \half, \isZero, \toBase2Rev.
• New particle: \filter.

Breaking changes

• The code page is updated. The character ∞ is replaced with ½, and the character ∂ is replaced with ¿.

0.3.3.0 -- 2023-05-27

• New built-in functions: \factor, \index, \intersect, \rot3, \tally, \union.
• New particle: \dupDip2.

0.3.2.0 -- 2023-05-15

• New built-in functions: \ceil, \denominator, \floor, \numerator, \setMinus, \sqrt.
• Fixed a bug in \pow.

0.3.1.0 -- 2023-05-03

• New built-in functions: \intPartition, \octet, \recip, \replicate, \uniqueValue.

Breaking changes

• To prevent the version number from growing too fast, small breaking changes like code page updates and function renames are no longer considered major version changes.
• The code page is updated. New characters are added, and the values of some characters are changed.
• \setPart is renamed to \setPartition.

0.3.0.0 -- 2023-04-16

• The language is still incomplete. Everything, especially the code page, is subject to change.
• New built-in functions: \factorial, \gcd, \inToChar, \lcm, \mean, \primePi, \rotate, \setPart, \transpose, \unpair, \unsingleton.
• New built-in particle: \mapFirst.
• \map now supports functions with no argument.
• The interpreter can now print the version number using the -v flag.

Breaking changes

• The code page is updated. New characters are added, and the values of some characters are changed.
• The argument order of \pow is reversed. Now the exponent is the first argument, and the base is the second.
• \bytes is renamed to \charToInt.
• \length and \enumerate now fail if the argument is not a list or a string.
• The arity of \noPop is changed to (m -> n) -> (m -> m + n).

0.2.1.0 -- 2023-03-26

• Fixed some bugs.

0.2.0.0 -- 2023-03-18

• The language is still incomplete. Everything, especially the code page, is subject to change.
• The dependency on base becomes base >=4.13 && <5. Now you can build Nekomata with GHC 8.8.4 or newer.
• The interpreter can now take multiple inputs separated by newlines using the -m flag. This is useful for testing.
• New built-in functions: \cons0, \delta, \divInt, \enumerate, \free, \split, \toBase.
• Fixed some bugs in result printing and documentation generation.

Breaking changes

• The code page is completely redesigned. Now it only contains characters supported by the Liberation Mono font.
• The short name for most of the built-ins are changed.
• The numeric type is changed from Integer to Rational, and the semantics of some built-ins are changed accordingly.
• \div is split into \div and \divInt.
• \toBase is renamed to \toBaseRev, and a new \toBase is added.
• \positive is renamed to \isPositive.

0.1.1.0 -- 2023-03-11

• Fixed some errors in the documentation.
• New built-in functions: \allEqual, \init, \isPrime, \pow, \prime, \snoc, \unsnoc.

0.1.0.0 -- 2023-02-26

• First version. Released on an unsuspecting world.
• The language is still incomplete. Everything is subject to change.
• I release it now so that I can start posting answers on Code Golf StackExchange.