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Wikifunctions:Suggest a function

From Wikifunctions

Do you have an idea for a new function? Suggest it here! It may help to refer to our glossary.

You can go and create a function right away if you have the user-rights, and it aligns with other work.

Note that for now we only support strings, Booleans, Natural numbers, and lists as input and output types of functions. More types are coming in the next few months.

Once created, consider adding new Functions to the catalogue.

Proposed functions requiring only available types (string, Boolean, Natural number, list)

String

String character discard functions

  • remove stereochemical specificity in SMILES string
    • e/z isomers
  • simplify SMILES string according to some basic simplifications

String character replacement functions

String search functions

String escaping and unescaping functions

String encoding and decoding functions

String presentation functions

String colour notation functions

String notation validation checks

String validation checks

  • 22.5px Doing... check if string is in lower camel case
  • check if string is a valid ISO 3166 country code
  • check if string is a valid ISO 8601 date/time (2023-08-03 ⇒ true; 2023-02-30 ⇒ false; 2023-08-03 15:00:00.000 ⇒ true; 2023-08-03 25:00:00.000 ⇒ false)
  • check if string is a valid EDTF date/time
  • 22.5px Doing... check if string is a valid email address (watch out, see this list of falsehoods about email addresses to create unit tests - email addresses are more complicated than they seem) — is valid email address (Z10410) creating test cases in progress. Currently it is stuck on figuring out what exactly is a valid emaill address. Nearly every errata for RFC:3696 is about that.
  • 22.5px Doing... check if string is a valid Wikidata itemIs valid Qid (Z10696) (possibly stuck on phab:T343593?)
  • check if string is a valid ISO 6709 coordinates

String analysis functions

Monolingual text

String Wikitext operations

...

Natural number

List

Basic list/iterable functions

  • group

Complex list functions

  • zip lists together: for [ A .. Z ] and [ 1 .. 26 ] return [ [ A, 1 ], [ B, 2 ], .. ]
    • Unsure what happens if input lists are of different lengths.
    • If possible this function should be able to zip more than 2 lists together... 3, 4, n? Perhaps the input should be list(list, list, list, list, ..).

CSV list operations

  • list of strings to csv
number -> list of decimal digits
number -> list of binary digits
number -> list of digits in base provided Well very well (talk) 11:20, 18 May 2024 (UTC)[reply]

Functions with functions as arguments

  • sort, by a given function
  • test whether certain functions have specific properties of homogeneous relations for particular lists/sets
  • remove first element matching filter from list

Morphological functions

morphology is the part of linguistics that studies how language parts are 'shaped' and change diachronically and when inflected. Hausa, Igbo, Malayalam, Bangla/Bengali and Dagbani are focus languages for Wikidata's lexicographic dataset, which is an important aspect of Abstract Wikipedia.

mul - Multiple languages

  • inputs: natural number (new numeric type) and language Z-number; output: 'singular', 'dual', 'paucal', 'plural', etc. as string
    22.5px Doing...: use Z15977 instead (Z13899)

ase - American Sign Language

  • string: Stokoe to ase-Sgnw and vice-versa (consult @Slevinski: as to best approach)

bn - Bangla

cy - Welsh

w:en:colloquial Welsh morphology

dag - Dagbani

de - German

  • tense * person * number for each verb
    • tenses: present, past, ...?
    • person: first, second, third
    • number: singular, plural
    • 22.5px Doing... third person singular present
    • second person singular preterite

en - English

  • English verb to agent noun (Z11390) Verb -> agent noun, e.g. "dance"->"dancer"
  • Join English morphemes (extends suffix English word (Z13254) to cases like re + en + able + er + s → re-enablers. suffix English word (Z13254) will correctly join re-enable + ers or re- + enablers, but re + enablers → “renablers” (incorrect). English morpheme agglutination (Z13275) tests the Reduce function to produce “detoxification” from a list of four morphemes (orchestrator limit exceeded with five). I doubt we’ll want to derive “toxify” from “toxic”, however.
  • Derive lemmas from a form. This is envisaged as the converse of Join English morphemes. The focus would be identifying the base form (the lexeme’s lemma) rather than further segmenting the lemma. For example, “underlay” should return “underlie” (for which it is the past participle) and the noun “underlay” (for which it is the lemma) and (perhaps) the verb “underlay”, which might be the tendency of an unproductive hen or the activity of a carpet-fitter. As this is a purely functional converse, every string will have itself as a possible lemma.
  • Generate Numerical prefixes of various kinds from a natural number input.

fr - French

ha - Hausa

A notated demo sentence ("Aishà taa jeefar dà kàren Indoo" ― "Aisha threw away Indo's dog") is available at http://intent.xigt.org

ig - Igbo

ldn - Láadan

section moved to WF:human languages/Z1882

ml - Malayalam

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)
  • Done Hamming distance between two strings of equal length, e.g. "Wikipedia" & "Wikimedia" ⇒ 1. - hamming distance between two strings (Z11328)
  • Levenshtein distance between two strings (e.g. "kitten" to "sitting" => 3 : kitten > sitten > sittin > sitting)

String encoding and decoding functions

(would be better with types representing a stream of bytes)

Natural language functions

Cryptographic hash functions

(would be better with types representing a stream of bytes)

Colour functions

  • return colour contrast ratio (per [1]) of two RGB colours (provided as strings e.g. "#FF0000")

Date, time, and calendric functions

Note: 'time' type not yet supported, use 'string' (or for strictly numeric values, 'natural number')

Bengali calendar

Gregorian to Bangla (Z12926): Returns the Bangla equivalent date of a Gregorian date format. The input fields represent the Year, month, and day, respectively.

Chinese calendar

French Republican Calendar

decimalises and secularises the Gregorian

Gregorian

widely used calendar derived from the Julian, basis for ISO 8601

Holocene calendar

Indian national calendar

Islamic

a solar 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

Basic numerical functions

Data serialization functions

Basic list/iterable functions requiring numeric types

  • Sum the elements of a numeric list - sum the elements of a numeric list (Z14038)
  • Product of the elements of a numeric list
  • Done length of a list (Z12681): number of objects on a list
  • flat a list (Z12676): flatten a 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?
  • 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?
  • Done First n elements of list: return a list of the first n elements of a supplied list - get the first n elements of a list (Z13366)
  • Done Last n elements of list: return a list of the last n elements of a supplied list - get the last n elements of a list (Z13362)
  • Every nth element of list: returns every nth element of the supplied list
  • Done - get the nth element of a list (Z13397): When given a valid index (1-based) return the nth element of the supplied list otherwise return nothing
  • Remove every nth element of list: removes every nth element of the supplied list -
  • Done remove the nth element from a list (Z13429): When given a valid index remove the element at the position and return the supplied list otherwise return nothing
  • 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)

Geodetics functions

w:en:planetary coordinate system, w:en:well-known text representation of coordinate reference systems

Earth

  • convert coordinates outside of the ranges (-180, 180) for longitude and (-90, 90) for latitude to a canonical form

Mars

  • convert coordinates outside of the ranges [0, 360) for longitude and (-90, 90) for latitude to a canonical form

Unit conversion functions

External function lists