New pages
Jump to navigation
Jump to search
(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)
- 16:42, 3 March 2024 Function style (hist | edit) [29 bytes] Marshall (talk | contribs) (Redirected page to Function styles) Tag: New redirect
- 16:41, 3 March 2024 Direct definition (notation) (hist | edit) [3,803 bytes] Marshall (talk | contribs) (Created page with "Ken Iverson's '''direct definition''' is a function style written with a name followed by <code>:</code> and a result, using <syntaxhighlight lang=apl inline>⍺</syntaxhighlight> and <syntaxhighlight lang=apl inline>⍵</syntaxhighlight> for arguments. The result may be one expression, which is evaluated to apply the function, or three expressions separated by <code>:</code>, in which case the middle expression is evaluated to determine which of the other tw...") originally created as "Direct definition (Iverson)"
- 01:20, 2 March 2024 Prefix vector (hist | edit) [39 bytes] Marshall (talk | contribs) (Redirected page to Prefix and suffix vectors) Tag: New redirect
- 01:20, 2 March 2024 Suffix vector (hist | edit) [39 bytes] Marshall (talk | contribs) (Redirected page to Prefix and suffix vectors) Tag: New redirect
- 01:14, 2 March 2024 Prefix and suffix vectors (hist | edit) [3,541 bytes] Marshall (talk | contribs) (Created page with "{| class=vertical-navbox style="float:right; font-size:500%; margin:0 1ex;" |<code>⍺</code> <code>⍵</code> |} In Iverson notation, the '''prefix vector''' <math>\alpha^j(n)</math> and '''suffix vector''' <math>\omega^j(n)</math> of weight <math>j</math> and length <math>n</math> are Boolean vectors that can be used with Replicate to select a prefix or suffix of a vector, a task now performed with Take. Primitives <code>⍺</code> and <code>⍵...") originally created as "Prefix and Suffix vectors"
- 15:40, 1 March 2024 Dyalog APL 19.0 (hist | edit) [38 bytes] Marshall (talk | contribs) (Redirected page to Dyalog APL versions#19.0) Tag: New redirect
- 15:06, 28 February 2024 APL*PLUS/PC (hist | edit) [22 bytes] Marshall (talk | contribs) (Redirected page to APL*PLUS) Tag: New redirect
- 14:45, 28 February 2024 Expansion (hist | edit) [20 bytes] Marshall (talk | contribs) (Redirected page to Expand) Tag: New redirect
- 14:45, 28 February 2024 Interval vector (hist | edit) [29 bytes] Marshall (talk | contribs) (Redirected page to Index Generator) Tag: New redirect
- 14:45, 28 February 2024 Exponentiation (hist | edit) [30 bytes] Marshall (talk | contribs) (Redirected page to Power (function)) Tag: New redirect
- 03:39, 28 February 2024 IVSYS/7090 (hist | edit) [7,262 bytes] Marshall (talk | contribs) (Created page with "{{Infobox array language | array model = flat without boxes | index origin = 1 | function styles = defined function | numeric types = integer, float | unicode support = no | released = 1965 | developer = Larry Breed (IBM), Phil Abrams | implementation language = wikipedia:FORTRAN | platforms = wikipedia:IBM 7090 | ope...")
- 21:28, 26 February 2024 Philip Abrams (hist | edit) [25 bytes] Marshall (talk | contribs) (Redirected page to Phil Abrams) Tag: New redirect
- 21:28, 26 February 2024 Phil S. Abrams (hist | edit) [25 bytes] Marshall (talk | contribs) (Redirected page to Phil Abrams) Tag: New redirect
- 21:27, 26 February 2024 Phil Abrams (hist | edit) [3,400 bytes] Marshall (talk | contribs) (Created page with "'''Philip Samuel Abrams''' is an APL implementer who worked on IVSYS/7090, APL\1130, and APL\3000. He is a co-founder of STSC and was briefly chairman of SIGAPL. Abrams graduated Princeton with an A.B. in mathematics in 1964 and entered Stanford, where he would earn an M.S. degree in computer science in 1966 and Ph.D. in 1970. There he worked with Larry Breed, of IBM's wik...")
- 02:34, 26 February 2024 Richard Lathwell (hist | edit) [27 bytes] Marshall (talk | contribs) (Redirected page to Dick Lathwell) Tag: New redirect
- 02:33, 26 February 2024 IPSA '84 (hist | edit) [35 bytes] Marshall (talk | contribs) (Redirected page to IPSA conferences#1984) Tag: New redirect
- 02:33, 26 February 2024 IPSA conference (hist | edit) [30 bytes] Marshall (talk | contribs) (Redirected page to IPSA conferences) Tag: New redirect
- 02:32, 26 February 2024 Dick Lathwell (hist | edit) [3,867 bytes] Marshall (talk | contribs) (Created page with "'''Richard Henry Lathwell''' was one of the implementers of APL\360, and a designer and implementer at IBM and I.P. Sharp Associates afterwards. He is credited with the practical realization of shared variables in APL.SV, and also published the modern formula for tolerant comparison,<ref>Dick Lathwell. [https://doi.org/10.1145/800114.803685 APL comparison tolerance] at APL76 (also reproduced in [https://www.jsoftware.com/papers/satn23.htm SATN...")
- 03:34, 25 February 2024 Comparison tolerance (hist | edit) [4,430 bytes] Marshall (talk | contribs) (Created page with "'''Tolerant comparison''' is an inexact form of comparison used to mitigate the impact of floating-point rounding error on programs. It considers two numbers equal when their relative difference is smaller than a parameter called the '''comparison tolerance''', and accessed with the system variable <syntaxhighlight lang=apl inline>⎕CT</syntaxhighlight>. In addition to the comparison functions, tolerance applies to Match and Not Match, Floor, C...") originally created as "Tolerant comparison"
- 02:46, 25 February 2024 Character (hist | edit) [1,764 bytes] Marshall (talk | contribs) (Created page with ":''This page is about the data type. For the symbols used to write APL code, see Glyph.'' A '''character''' is a scalar array representing a unit of text. In current APLs this generally means a Unicode wikipedia:code point, while historically various custom character sets were used. These accomodated typical text as well as APL code, usually with one byte per character. Characters and numbers are the two basic...")
- 22:26, 23 February 2024 Numeric (hist | edit) [20 bytes] Marshall (talk | contribs) (Redirected page to Number) Tag: New redirect
- 22:25, 23 February 2024 Numeric type (hist | edit) [34 bytes] Marshall (talk | contribs) (Redirected page to Number#Numeric types) Tag: New redirect
- 22:25, 23 February 2024 Numeric types (hist | edit) [34 bytes] Marshall (talk | contribs) (Redirected page to Number#Numeric types) Tag: New redirect
- 22:23, 23 February 2024 Number (hist | edit) [4,921 bytes] Marshall (talk | contribs) (Created page with "In APL, a number is a scalar array representing a mathematical wikipedia:number. Numbers and characters were the only possible element types in APL0 and remain the basic data types in modern APLs. In addition to quantities for computation, they are used to represent Booleans (0 and 1) and indices. Numeric operations may be subject to floating-point rounding and comparison tolerance. Traditionally, APL provides only one user-visib...")
- 00:24, 23 February 2024 Soliton (hist | edit) [56 bytes] Marshall (talk | contribs) (Redirected page to I.P. Sharp Associates#Soliton Incorporated) Tag: New redirect
- 23:53, 21 February 2024 APL*PLUS III (hist | edit) [22 bytes] Adám Brudzewsky (talk | contribs) (Redirected page to APL*PLUS) Tag: New redirect
- 19:35, 21 February 2024 APL*PLUS II (hist | edit) [22 bytes] Marshall (talk | contribs) (Redirected page to APL*PLUS) Tag: New redirect
- 16:25, 20 February 2024 Evolution level (hist | edit) [29 bytes] Marshall (talk | contribs) (Redirected page to Migration level) Tag: New redirect
- 16:24, 20 February 2024 EVOLUTION ERROR (hist | edit) [794 bytes] Marshall (talk | contribs) (https://tenebrax.bandcamp.com/track/evolution-error is quite good actually)
- 02:55, 18 February 2024 Kx Systems (hist | edit) [1,062 bytes] Marshall (talk | contribs) (Created page with "'''KX''' is the vendor for the wikipedia:kdb+ time-series database and associated programming language Q, and developer of K from K1 to K4 (K4 remains accessible but its use is discouraged). Founded in 1993 by Arthur Whitney and Janet Lustgarten, it is fully owned by finance technology firm FD Technologies (formerly First Derivatives) since 2018. Whitney began work on K after leaving wikipedia:Morgan Stanley where he had developed A+. Having de...")
- 00:21, 18 February 2024 VS APL (hist | edit) [1,446 bytes] Marshall (talk | contribs) (Created page with "{{Infobox array language | array model = flat without boxes | index origin = <syntaxhighlight lang=apl inline>⎕IO</syntaxhighlight>0 or 1 | function styles = defined function | numeric types = floats (64-bit HFP) | unicode support = no | released = 1976 | developer = IBM | implementation language = wik...")
- 09:27, 15 February 2024 Comparison of APL dialects (hist | edit) [21,938 bytes] RubenVerg (talk | contribs) (Create Comparison of APL dialects page)
- 16:46, 14 February 2024 Soliton Associates (hist | edit) [56 bytes] Marshall (talk | contribs) (Redirected page to I.P. Sharp Associates#Soliton Incorporated) Tag: New redirect
- 16:44, 14 February 2024 Scientific Time Sharing Corporation (hist | edit) [18 bytes] Marshall (talk | contribs) (Redirected page to STSC) Tag: New redirect
- 16:39, 14 February 2024 STSC (hist | edit) [2,454 bytes] Marshall (talk | contribs) (Created page with "'''Scientific Time Sharing Corporation''' ('''STSC'''), later '''Manugistics Group''', was the developer of APL*PLUS and NARS. Founded in 1969, the company initially developed APL*PLUS together with I.P. Sharp Associates (IPSA), and offered time sharing service to the United States while IPSA sold to Canada. The products were later split, with IPSA renaming its version to SHARP APL. STSC's APL business was sold to form APL2000 in 1995, and is now...")
- 09:48, 14 February 2024 Comment (hist | edit) [2,353 bytes] Adám Brudzewsky (talk | contribs) (Created page with "{| class=vertical-navbox style="float:right; font-size:500%; margin:0 1ex;" |<code><nowiki>⍝</nowiki></code> |} APL allows a '''comment''' at the end of a line, separating (optional) code on the left from comments on the right using the lamp glyph <syntaxhighlight lang=apl inline>⍝</syntaxhighlight>, thus forming a line comment: <syntaxhighlight lang=apl> 2+3 ⍝ An example of addition 5 </syntaxh...")
- 19:27, 12 February 2024 Timeline of array programming corporations (hist | edit) [5,458 bytes] Marshall (talk | contribs) (Created page with "This page shows the history of businesses strongly tied to APL or other array language implementation. Many other commercial vendors have implemented APL at some point. == By dialect == Here families of dialects are grouped together: IBM APL includes APL0, APL.SV, and others; APL*PLUS includes APL+Win and APL64; and SHARP APL includes SAX. Entries in parentheses indicate a change in ownership of the array language developer. Those ma...")
- 02:58, 7 February 2024 Character arithmetic (hist | edit) [1,312 bytes] Marshall (talk | contribs) (Created page with "'''Affine character arithmetic''' is a system that defines addition and subtraction in certain cases involving character arguments. In this system, a number can be added to or subtracted from a character to give another character, and two characters can be subtracted to give a number. These are the same operations allowed in an wikipedia:affine space, and on types such as wikipedia:pointer (computer science)s. Character arithmetic was developed...")
- 02:01, 6 February 2024 Case (hist | edit) [1,531 bytes] Marshall (talk | contribs) (No idea what to call this page)
- 01:17, 6 February 2024 Solo (hist | edit) [21 bytes] Marshall (talk | contribs) (Redirected page to Promote) Tag: New redirect
- 01:17, 6 February 2024 Increase rank (hist | edit) [21 bytes] Marshall (talk | contribs) (Redirected page to Promote) Tag: New redirect
- 01:15, 6 February 2024 Promote (hist | edit) [1,791 bytes] Marshall (talk | contribs) (Created page with "'''Promote''' is a monadic function that adds a length-1 axis to its argument before the other axes, resulting in an array with rank one higher. It appears as a primitive in Kap (<syntaxhighlight lang=apl inline><</syntaxhighlight>, "increase rank") and Dyalog APL Vision (<syntaxhighlight lang=apl inline>∧</syntaxhighlight>), as well as J (<syntaxhighlight lang=j inline>,:</syntaxhighlight>, "'''Itemize'''"), BQN (<code>≍</code>, "...")
- 00:50, 6 February 2024 Take first (hist | edit) [19 bytes] Marshall (talk | contribs) (Redirected page to First) Tag: New redirect
- 00:49, 6 February 2024 Inverse compose (hist | edit) [29 bytes] Marshall (talk | contribs) (Redirected page to Reverse Compose) Tag: New redirect
- 00:49, 6 February 2024 Scan first axis (hist | edit) [18 bytes] Marshall (talk | contribs) (Redirected page to Scan) Tag: New redirect
- 00:49, 6 February 2024 Windowed reduce leading axis (hist | edit) [29 bytes] Marshall (talk | contribs) (Redirected page to Windowed Reduce) Tag: New redirect
- 00:49, 6 February 2024 Windowed reduce (hist | edit) [29 bytes] Marshall (talk | contribs) (Redirected page to Windowed Reduce) Tag: New redirect
- 00:48, 6 February 2024 Reduce leading axis (hist | edit) [20 bytes] Marshall (talk | contribs) (Redirected page to Reduce) Tag: New redirect
- 00:47, 6 February 2024 For each (hist | edit) [18 bytes] Marshall (talk | contribs) (Redirected page to Each) Tag: New redirect
- 00:47, 6 February 2024 Compare not equals (hist | edit) [23 bytes] Marshall (talk | contribs) (Redirected page to Not Match) Tag: New redirect