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ocomotive axle arrangements notation check if a string is a valid doi something about implementation difficulties https stackoverflow com questions 27910 finding a doi in a document or page alexander mart earth talk 14 28 21 december 2023 utc reply done compose z24331 extract digital object identifier name from string z36883 yoshirulz talk 00 24 25 june 2026 utc reply nice work star so9q talk 17 05 7 july 2026 utc reply string validation checks check if string is a valid iso 3166 country code check if string is a valid edtf date time string analysis functions monolingual text string wikitext operations natural number integer byte see existing byte functions in catalogue next byte without overflow byte byte previous byte without overflow byte byte next byte by gray code byte byte previous byte by gray code byte byte all bits set byte boolean no bits set byte boolean add bytes without overflow byte byte byte subtract bytes without overflow byte byte byte multiply bytes without overflow byte byte byte add bytes with overflow byte byte byte subtract bytes with overflow byte byte byte multiply bytes with overflow byte byte byte modulo bytes byte byte byte byte division byte byte byte right shift byte byte left shift byte byte right shift by n byte natural number byte left shift by n byte natural number byte right shift as ring byte byte left shift as ring byte byte right shift by n as ring byte natural number byte left shift by n as ring byte natural number byte unicode code point see existing code point functions in catalogue codepoint to list of bytes for utf 8 codepoint to list of bytes for utf 16 codepoint to list of bytes for utf 32 object list basic list iterable functions complex list functions csv list operations functions with functions as arguments test whether certain functions have specific properties of homogeneous relations for particular lists sets gregorian calendar date see catalogue of calendar date functions for existing functions create a reading function for dagbani that handles all the possible formats both the english linke and the traditional ones both the gregorian and the hijra calendars dv103 talk 15 43 31 may 2025 utc reply same day of the year date date boolean same day of the week date date boolean within a year date date boolean within a week date date boolean within n days date date boolean months between date date natural number weeks between date date natural number n days later date natural number date n days earlier date natural number date n weeks earlier date natural number date n months later date natural number date n months earlier date natural number date n years later date natural number date n years earlier date natural number date julian day number to date integer date how many leap days passed between two dates date date natural number how many weekdays between two dates date date day of the week natural number within javascript s date implementation date boolean next time a day of the month is on a specific weekday date natural number day of the week date next friday the 13th date date nth weekday of the month date day of the week natural number date nth working days after date list of wikidata item references list of holidays wikidata item reference place date gregorian year see catalogue of year functions for existing functions morphological functions main page wf hl proposed functions requiring future types note these functions cannot be implemented properly until the needed types are requested and approved if one wishes to nevertheless attempt to define and implement them the functions and implementations should indicate prominently in their labels that their input output types must be adjusted once support for the appropriate replacement types become available and the functions should not be used in the implementations of any other functions as the later adjustment of input output types to appropriate replacements will break those implementations string manipulation functions string analysis functions count distance between two letters in given alphabet default to 26 charcater western alphabet case insensitive e g a a 0 k n 3 string encoding and decoding functions would be better with types representing a stream of bytes base45 encode base45 decode hexadecimal utf 8 encode abc 41 42 43 20 e2 82 a4 hexadecimal utf 8 decode 41 42 43 20 e2 82 a4 abc decimal utf 8 encode abc 65 66 67 32 226 130 164 decimal utf 8 decode 65 66 67 32 226 130 164 abc octal utf 8 encode abc 101 102 103 40 342 202 244 octal utf 8 decode 101 102 103 40 342 202 244 abc binary utf 8 encode abc 01000001 01000010 01000011 00100000 11100010 10000010 10100100 binary utf 8 decode 01000001 01000010 01000011 00100000 11100010 10000010 10100100 abc unicode code point encode abc 41 42 43 20 20a4 unicode code point encode hex z10785 takes a unicode string and returns a space separated list of hexadecimal unicode code points unicode code point decode 41 42 43 20 20a4 abc create regular expression object string i e test i to test i natural language functions choose singular or plural based on number e g singularorplural person 6 people note that there are also dual and other grammatical numbers in other languages 魔琴 talk 18 54 26 october 2023 utc reply relevant interwiki link d wd property proposal plural forms arlo barnes talk 04 15 9 february 2024 utc reply was rejected the similar proposal has grammatical number p13986 was accepted but per the comments on your proposal just having that set and mapping it to one of our enums isn t sufficient since a language might have exceptions to its conjugation rules or handle rational real numbers in different ways being able to make use of cldr data might still be desirable to avoid hardcoding rules and exceptions into functions yoshirulz talk 02 16 18 december 2025 utc reply this is duplicated with a suggestion above there s some work done already z15977 we also have lightweight enums like grammatical number singular dual plural z28215 now yoshirulz talk 21 11 30 november 2025 utc reply cryptographic functions would be better with types representing a stream of bytes to do md2 md2 hashing z10135 description missing to do md4 md4 z10136 description missing to do md5 md5 z10137 calculate message digest 5 md5 hash for given string to do ripemd 128 ripemd 128 z10138 description missing to do ripemd 160 ripemd 160 z10139 compute the ripemd 160 hash of the input and return it as output to do blake2b 160 blake2b 160 z10140 description missing to do blake2b 256 blake2b 256 z10141 description missing to do blake2b 384 blake2b 384 z10142 description missing to do blake2b 512 blake2b 512 z10143 description missing to do blake2s 128 blake2s 128 z10144 description missing to do blake2s 160 blake2s 160 z10145 description missing to do blake2s 224 blake2s 224 z10146 description missing to do blake2s 256 blake2s 256 z10147 description missing to do sha 224 sha 224 z10149 description missing to do hmac sha 256 to do shake 128 shake128 z10150 expandable output function xof specified by nist fips 202 to do shake 256 shake256 z10151 expandable output function xof specified by nist fips 202 to do chacha20 chacha20 z25376 generate a chacha20 block from a key a counter and a nonce value the key is a 64 character hex string and both the counter and nonce are 64 bit integers that will be encoded as little endian to do x25519 x25519 z25393 multiply a point on curve25519 by a scalar to do keccak f 1600 keccak f 1600 z25399 keccak f 1600 permutation specified in fips 202 date time and calendric functions see also discussion of types at wf type calendar types module calendrical calculations q139667974 lua module earth focus orbit of earth bengali calendar gregorian to bengali date bangladesh z12926 converts a gregorian date to bangla date per bangladeshi calendar inputs year month day chinese calendar french republican calendar decimalises and secularises the gregorian day names is the day name part of the french republican calendar rural naming z13006 tests if input is one of the french language names for days in the frc not done yet gregorian widely used calendar derived from the julian basis for iso 8601 date to iso week number iso week date q2110154 string to date date to iso 8601 string done see date string english to iso 8601 z21842 converts a date string in a non iso 8601 format to its equivalent iso 8601 string input must use english or other format sbb1413 talk 18 47 21 january 2025 utc reply date to year yyyy date to month of the year 1 12 date to month name january december date to day of the month 1 31 date to hour of the day 0 23 date to minutes 0 59 date to seconds 0 59 named day from date or day of year input type date output type string the initial use case was automated population of on the day based on various collections of holidays festival days and observances shakespearefan00 talk 19 35 26 march 2025 utc reply so if you gave it 2025 05 01 it said all fools day etc possibly an additional input of enumrated type to indicate which data set to pull holidays fesitvals and observances from shakespearefan00 talk 19 35 26 march 2025 utc reply diary calander header function using the above and other date functions generates a data set from a given date hence if you give it 2003 05 01 you get back a josn set contianing the day of week string day in the month observances etc shakespearefan00 talk 19 35 26 march 2025 utc reply holocene calendar w en holocene calendar conversion done see gregorian to holocene year z21913 converts a given gregorian year to holocene year sbb1413 talk 13 30 25 january 2025 utc reply indian national calendar islamic a lunar calendar also called hijri julian mostly used by astronomers some historians and some orthodox christian denominations mesoamerican calendars including civil and clerical forms persian also called jalali thai calendar hebrew calendar mars focus orbit of mars blog post asgardian calendar proposed time keeping system for mars base on the online converter see asgardia for context darian calendar proposed time keeping system for mars requires julian date time to calculate and a month enumeration wf type proposals something to think about lukashian calendars proposed simple perpetual calendar system designed to be extensible to other reference frames for example a mars centric one eschews leap units java reference implementation github basic numerical functions round up 1 289 2 1 29 5678 2 5700 so if the number is floating point round to n decimal places and if not round to n significant figures is that right brightsunman talk 19 36 24 december 2023 utc reply done ceiling of rational number z20053 ceiling float64 to float64 z21043 and round rational to fixed decimal places simplified z27705 round to decimal places float64 z21047 round down done floor of rational number z20032 floor float64 to integer z20841 return integer value 5678 678 5678 done rational to nearest integer even integer tiebreak z19841 round float64 ties to even as integer z26315 english cardinal z13587 expresses a natural number in english words 23 twenty three convert money from us to anything else requires source of conversion rates which is a hole in function likeness arabic numeral to etruscan numeral etruscan numeral to arabic numeral data serialization functions parse a string as json extract string from json object based on jsonpath name alice name alice why not first convert a json string to an object and then have a function that extracts fields based on jsonpath doing stringly typed things like this proposal as defined isn t a good idea 0xdeadbeef talk 16 16 5 august 2023 utc reply this seems to be a good idea thanks i moved and splitted the proposal accordingly 1 byte talk 09 51 6 august 2023 utc reply is it okay to go ahead to create this extract string from json object based on jsonpath as a function dolphyb talk 16 14 15 february 2024 utc reply basic list iterable functions requiring numeric types w en lehmer random number generator sample c99 code sum the elements of a numeric list sum the elements of a list of natural numbers z14038 given a list of numeric values return the sum of all the values in the list otherwise return 0 when list is empty product of the elements of a numeric list done product of list rational numbers z23909 product of list natural numbers z13558 flatten untyped list z12676 flatten an untyped list to limited depth slice of list elements for the supplied list return a list of elements that are at indexes between a supplied range n m zero indexing is used first element is index 0 n and m are are included in the range what happens if n and or m are invalid indexes done take sub sequence of list z26556 clamps indices to valid range 1 n returns empty if end start remove slice of elements from list return the supplied list with elements between a supplied range of indexes removed zero indexing is used first element is index 0 n and m are are included in the range what happens if n and or m are invalid indexes every nth element of list returns every nth element of the supplied list done every nth item of list starting with nth z28735 returns every nth item of a list for example 3 and a list of 10 items would return the 3rd 6th and 9th item remove every nth element of list removes every nth element of the supplied list sample n objects from list return up to n random objects from the list jaccard similarity coefficient see https en wikipedia org wiki jaccard_index weighted average supply a list of values and a second list of the same length of their weights returns a weighted average example input values 10 20 30 weights 1 2 3 output 23 33 done weighted average floating point values z28066 weighted average sum value weight sum weight lists must be equal length geodetics functions w en planetary coordinate system w en well known text representation of coordinate reference systems generate antipodal coords earth convert coordinates outside of the ranges 180 180 for longitude and 90 90 for latitude to a canonical form plus codes to from geocoordinates functions should match the semantics of the expected api is valid plus code is shortened plus code is full plus code plus code from co ordinates z25963 only works with wgs84 co ordinates from plus code sw corner shorten plus code recover nearest plus code implementations for js and python are provided apache 2 0 licenced not sure how self contained they are most of the functions could also be implemented by composition sample data is provided for testing it s 500 cases for each of encode decode and 50 cases for each of the others but they re grouped nicely so maybe take 1 from each mars w en areography cartography and geodesy convert coordinates outside of the ranges 0 360 for longitude and 90 90 for latitude to a canonical form moon w en selenography lunar cartography and toponymy unit conversion functions fahrenheit to celsius z15560 converts fahrenheit f to celsius c the function has two impleme...