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548:"Time to hello world" (TTHW) is the time it takes to author a "Hello, World!" program in a given programming language. This is one measure of a programming language's ease of use; since the program is meant as an introduction for people unfamiliar with the language, a more complex "Hello, World!" program may indicate that the programming language is less approachable. For instance, the first publicly-known "Hello, World!" program in
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program for "Hello, World!", as functional programming emphasizes recursive techniques, whereas the original examples emphasize I/O, which violates the spirit of pure functional programming by producing
365:, and the presence of the comma or exclamation mark. Some devices limit the format to specific variations, such as all-capitalized versions on systems that support only capital letters, while some
2283:"GitHub – leachim6/hello-world: Hello world in every computer language. Thanks to everyone who contributes to this, make sure to see CONTRIBUTING.md for contribution instructions!"
540:. Mark Guzdial and Elliot Soloway have suggested that the "hello, world" test message may be outdated now that graphics and sound can be manipulated as easily as text.
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570:, as a measure of how simple it is for a new developer to get a basic example working; a shorter time indicates an easier API for developers to adopt.
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main( ) { extrn a, b, c; putchar(a); putchar(b); putchar(c); putchar('!*n'); } a 'hell'; b 'o, w'; c 'orld';
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449:, where text output is either difficult (requiring added components or communication with another computer) or nonexistent. For devices such as
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552:(which actually output "HEllO WORld") took two years to be announced, and it was produced not by a human but by a code generator written in
57:. A "Hello, World!" program is often the first written by a student of a new programming language, but such a program can also be used as a
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Some languages change the function of the "Hello, World!" program while maintaining the spirit of demonstrating a simple example.
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The phrase "Hello, World!" has seen various deviations in casing and punctuation, such as the capitalization of the leading
101:, the tradition of using the phrase "Hello, World!" as a test message was influenced by an example program in the 1978 book
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character. The phrase is divided into multiple variables because in B a character constant is limited to four
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and a simple example of installing a software package. For developers, it provides an example of creating a
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was introduced as a slightly longer greeting that required several character constants for its expression.
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285:"Hello, World!" programs vary in complexity between different languages. In some languages, particularly
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emitted both
English and Chinese or Japanese characters, demonstrating the language's built-in
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377:. Other human languages have been used as the output; for example, a tutorial for the
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254:. Outside computing, use of the exact phrase began over a decade prior; it was the
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Mastering the C++17 STL: Make full use of the standard library components in C++17
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may have to print a slightly modified string. For example, the first non-trivial
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2094:
Jolif, Christophe (January 2003). "Bringing SVG Power to Java
Applications".
97:
While small test programs have existed since the development of programmable
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2200:"The importance of "Time to First Hello, World!" an efficient API program"
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reports that "hello, world" instead originated in 1967 with the language
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is correctly installed, and that its operator understands how to use it.
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49:) a message similar to "Hello, World!". A small piece of code in most
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programming language features a spinning Earth "Hello, World!" using
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465:(LED), which demonstrates timing and interaction between components.
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30:"Hello, World" and "Helloworld" redirect here. For other uses, see
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461:(CPLDs), "Hello, World!" may thus be substituted with a blinking
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program printed "HEllO WORld", this having been determined to be
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A "Hello, World!" message being displayed through long-exposure
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1946:"Blinking LED using Atmega32 Microcontroller and Atmel Studio"
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The concept has been extended beyond programming languages to
510:
2225:
Jin, Brenda; Sahni, Saurabh; Shevat, Amir (29 August 2018).
574:
Knowledge (XXG) articles containing "Hello, World!" programs
202:
The C-language version was preceded by
Kernighan's own 1972
27:
Traditional first example of a computer programming language
516:
Variations of the "Hello, World!" program that produce a
231:
characters. The previous example in the tutorial printed
1602:(graphic equivalent to "Hello, World!" for old hardware)
293:) many more statements can be required. For example, in
53:, this program is used to illustrate a language's basic
2228:
Designing Web APIs: Building APIs That
Developers Love
2035:"CPLD Tutorial: Learn programmable logic the easy way"
433:. Languages otherwise able to print "Hello, World!" (
1903:
1600:
Bad Apple!! § Use as a graphical and audio test
2711:
2673:
2645:
2607:
2574:
2536:
2406:
2383:
304:
1680:
520:(as opposed to text output) have also been shown.
479:provide the "Hello, World!" program through their
45:that emits (or displays) to the screen (often the
2297:"Unsung Heroes of IT: Part One: Brian Kernighan"
1915:"Introduction to Microcontrollers - Hello World"
1595:"99 Bottles of Beer" as used in computer science
483:systems, which can be invoked with the command
303:followed by a newline, one only needs to write
1817:"William B. Williams, Radio Personality, Dies"
2335:
2125:"Teaching the Nintendo Generation to Program"
8:
274:A "Hello, World!" program running on Sony's
2703:The quick brown fox jumps over the lazy dog
1894:A Tutorial for the Go Programming Language.
111:. The example program from the book prints
85:"Hello, World!" program handwritten in the
2342:
2328:
2320:
2071:. Free Software Foundation. Archived from
524:demonstrated a "Hello, World!" program in
2010:. Raidió Teilifís Éireann. Archived from
172:. The function body consists of a single
2109:de Dinechin, Christophe (24 July 2010).
1977:"2. AVR Microcontrollers in Linux HOWTO"
1645:Langbridge, James A. (3 December 2013).
385:support. Another notable example is the
204:A Tutorial Introduction to the Language
1637:
497:package, either traditionally or using
1835:"C++ Programming/Examples/Hello world"
318:. In contrast, the equivalent code in
2206:from the original on 19 February 2020
1648:Professional Embedded ARM Development
51:general-purpose programming languages
7:
2006:Andersson, Sven-Åke (2 April 2012).
1956:from the original on 5 November 2014
509:, serves as an example of writing a
1875:from the original on 27 August 2022
1186:OpenEdge Advanced Business Language
2160:O'Dwyer, Arthur (September 2017).
2008:"3.2 The first Altera FPGA design"
1845:from the original on 28 March 2022
1733:from the original on 22 March 2022
1211:Parrot intermediate representation
459:complex programmable logic devices
25:
1913:Silva, Mike (11 September 2013).
1797:from the original on 3 April 2018
1765:from the original on 11 June 2015
2825:Test items in computer languages
2198:Wiegers, Harold (28 June 2018).
2045:from the original on 20 May 2015
1925:from the original on 22 May 2015
1579:
237:on the terminal, and the phrase
188:whatever is passed to it as the
115:, and was inherited from a 1974
2804:1951 USAF resolution test chart
1987:from the original on 2 May 2015
1981:The Linux Documentation Project
558:
330:, the manual declaration of an
1721:"Programming in C: A Tutorial"
846:Extensible Embeddable Language
455:field-programmable gate arrays
367:esoteric programming languages
258:of New York radio disc jockey
1:
2830:Computer programming folklore
223:on the terminal, including a
184:ormatted"; it outputs to the
107:, with likely earlier use in
2774:"The North Wind and the Sun"
2033:Fabio, Adam (6 April 2014).
1689:Englewood Cliffs, New Jersey
1531:Web Server Gateway Interface
786:Common Intermediate Language
180:function, which stands for "
125:Programming in C: A Tutorial
32:Hello World (disambiguation)
2556:Trabb Pardo–Knuth algorithm
1944:George, Ligo (8 May 2013).
1621:Outline of computer science
1587:Computer programming portal
966:Internet Foundation Classes
556:
322:requires the import of the
2846:
2754:functions for optimization
2513:Snell & Wilcox SW2/SW4
2263:The Hello World Collection
1758:The Programming Language B
1683:The C Programming Language
168:defines where the program
161:In the above example, the
104:The C Programming Language
29:
2433:EIA 1956 resolution chart
2355:
1651:. John Wiley & Sons.
1191:Open Programming Language
826:Easy Programming Language
351:poly(methyl methacrylate)
312:"Hello, World!"
217:The program above prints
2566:Just another Perl hacker
2428:Indian-head test pattern
2365:Reference implementation
1616:Just another Perl hacker
1206:Parrot assembly language
821:DOORS Extension Language
530:scalable vector graphics
481:software package manager
349:(CNC) machining test in
262:beginning in the 1950s.
211:
150:"hello, world"
129:
2546:"Hello, World!" program
2385:Artificial intelligence
2301:TheUnsungHeroesOfIT.com
1446:Standard Widget Toolkit
1116:mIRC scripting language
676:Basic Assembly Language
424:, tend to substitute a
400:with a moving strip of
119:internal memorandum by
39:"Hello, World!" program
2784:SMPTE universal leader
2491:Philips circle pattern
2113:. Grenouille Bouillie.
651:Atari Assembler Editor
445:) may also be used in
410:Functional programming
405:
354:
297:, to print the string
282:
170:should start executing
94:
41:is generally a simple
2096:Sun Developer Network
1111:Microsoft Small Basic
501:, and the version of
402:light-emitting diodes
395:
344:
273:
84:
2789:EURion constellation
2609:3D computer graphics
2168:Packt Publishing Ltd
1899:26 July 2010 at the
538:3D computer graphics
463:light-emitting diode
276:PlayStation Portable
2375:Standard test image
2350:Standard test items
1919:EmbeddedRelated.com
1673:Kernighan, Brian W.
544:Time to Hello World
477:Linux distributions
412:languages, such as
291:low-level languages
287:scripting languages
260:William B. Williams
192:, in this case the
61:to ensure that the
2538:Computer languages
2291:. 30 October 2021.
2269:"Hello world/Text"
2231:. O'Reilly Media.
1821:The New York Times
1677:Ritchie, Dennis M.
721:Caché ObjectScript
406:
355:
283:
95:
2812:
2811:
2764:Harvard sentences
2589:Canterbury corpus
2177:978-1-78728-823-2
1871:. esolangs-wiki.
811:Data General Nova
559:§ Variations
489:. It serves as a
435:assembly language
347:numerical control
117:Bell Laboratories
63:computer software
16:(Redirected from
2837:
2647:Machine learning
2576:Data compression
2418:SMPTE color bars
2344:
2337:
2330:
2321:
2316:
2314:
2312:
2307:on 26 March 2016
2303:. Archived from
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2278:
2250:
2249:
2247:
2245:
2222:
2216:
2215:
2213:
2211:
2195:
2189:
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2151:
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2148:
2146:
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2134:. Archived from
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2121:
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2114:
2106:
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2061:
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1824:
1823:. 4 August 1986.
1813:
1807:
1806:
1804:
1802:
1781:
1775:
1774:
1772:
1770:
1754:Kernighan, B. W.
1752:Johnson, S. C.;
1749:
1743:
1742:
1740:
1738:
1732:
1725:
1717:Kernighan, Brian
1713:
1707:
1706:
1687:(1st ed.).
1686:
1669:
1663:
1662:
1642:
1589:
1584:
1583:
946:HTML Application
562:
518:graphical output
504:
487:
451:microcontrollers
447:embedded systems
328:software library
317:
316:
313:
310:
307:
301:
280:proof of concept
241:
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221:
198:
179:
176:, a call to the
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43:computer program
21:
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2836:
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2834:
2815:
2814:
2813:
2808:
2799:Webdriver Torso
2749:EICAR test file
2707:
2669:
2641:
2627:Stanford dragon
2603:
2570:
2561:Man or boy test
2532:
2518:Telefunken FuBK
2423:EBU colour bars
2402:
2379:
2351:
2348:
2310:
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2295:
2281:
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2170:. p. 251.
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1901:Wayback Machine
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1371:Robot Framework
641:Applesoft BASIC
576:
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502:
485:
336:standard output
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121:Brian Kernighan
112:
91:Brian Kernighan
79:
35:
28:
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5:
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2660:MNIST database
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2651:
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2640:
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2629:
2624:
2622:Stanford bunny
2619:
2613:
2611:
2605:
2604:
2602:
2601:
2599:enwik8, enwik9
2596:
2594:Silesia corpus
2591:
2586:
2584:Calgary corpus
2580:
2578:
2572:
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2569:
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2318:
2317:
2293:
2279:
2277:. 23 May 2024.
2265:
2258:
2257:External links
2255:
2252:
2251:
2237:
2217:
2190:
2176:
2152:
2116:
2111:"Hello world!"
2101:
2086:
2075:on 29 May 2014
2056:
2025:
2014:on 21 May 2015
1998:
1975:PT, Ranjeeth.
1967:
1936:
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1611:Java Pet Store
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89:and signed by
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2779:"Tom's Diner"
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2744:"Bad Apple!!"
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2141:on 5 May 2016
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300:Hello, World!
296:
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240:hello, world!
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18:Hello, World!
2693:Hamburgevons
2545:
2407:Television (
2393:Chinese room
2370:Sanity check
2309:. Retrieved
2305:the original
2300:
2286:
2274:Rosetta Code
2272:
2242:. Retrieved
2227:
2220:
2208:. Retrieved
2193:
2181:. Retrieved
2162:
2155:
2143:. Retrieved
2136:the original
2131:
2119:
2104:
2095:
2089:
2077:. Retrieved
2073:the original
2068:
2059:
2047:. Retrieved
2038:
2028:
2016:. Retrieved
2012:the original
2001:
1989:. Retrieved
1980:
1970:
1958:. Retrieved
1949:
1939:
1927:. Retrieved
1918:
1908:
1889:
1877:. Retrieved
1868:
1859:
1847:. Retrieved
1829:
1820:
1811:
1799:. Retrieved
1788:
1779:
1767:. Retrieved
1757:
1747:
1735:. Retrieved
1711:
1682:
1667:
1647:
1640:
1516:Visual Basic
1476:Turbo Pascal
1341:React Native
621:Apache Jelly
616:Apache Click
565:
547:
515:
498:
491:sanity check
484:
467:
431:side effects
407:
362:
358:
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324:input/output
298:
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124:
102:
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65:intended to
59:sanity check
38:
36:
2698:Lorem ipsum
2679:filler text
2632:Utah teapot
2617:Cornell box
2398:Turing test
2244:19 February
2210:19 February
2145:27 December
2069:GNU Project
1950:electroSome
1790:Jargon File
1441:Standard ML
1421:Shakespeare
1236:Perl module
1106:MicroPython
741:Casio BASIC
706:Blitz BASIC
636:AppleScript
606:AmbientTalk
554:Common Lisp
379:Go language
375:good enough
332:entry point
256:catchphrase
248:Jargon File
71:source code
2819:Categories
2675:Typography
2183:4 December
1879:28 October
1865:"Malbolge"
1632:References
1536:Whitespace
1521:Visual IRC
1431:SmallBASIC
1311:QuickBASIC
1286:PureScript
1266:PowerBASIC
1261:PostScript
1051:LiveScript
1006:JavaScript
532:, and the
353:(Perspex).
266:Variations
87:C language
2794:Shakedown
2409:test card
2311:23 August
2132:bfoit.org
1839:Wikibooks
1737:9 January
1436:Smalltalk
1281:Pure Data
1276:PureBasic
1041:LibreLogo
936:Hollywood
896:FreeBASIC
711:Brainfuck
681:Ballerina
528:based on
513:program.
507:GNU Hello
499:debhelper
426:factorial
345:Computer
190:parameter
174:statement
99:computers
2719:3DBenchy
2655:ImageNet
2204:Archived
2043:Archived
2039:Hackaday
1985:Archived
1954:Archived
1923:Archived
1897:Archived
1873:Archived
1849:16 March
1843:Archived
1801:21 April
1795:Archived
1769:8 August
1763:Archived
1728:Archived
1719:(1974).
1679:(1978).
1573:See also
1551:XHarbour
1501:Unlambda
1466:TI‑BASIC
1201:ParaSail
1176:OmniMark
1171:NWScript
1161:Newspeak
1131:Modula-3
1091:Malbolge
1076:MACRO-11
1071:MACRO-10
1036:K-Meleon
961:INTERCAL
891:Fortress
751:CherryPy
661:AviSynth
656:AutoLISP
601:ALGOL 60
561:, above)
550:Malbolge
371:Malbolge
338:stream.
178:printf()
166:function
2507:PM 5644
2503:PM 5544
2499:PM 5540
2495:PM 5538
2360:Pangram
2065:"Hello"
1869:Esolang
1486:UCBLogo
1471:Tornado
1406:Scratch
1156:Nemerle
1126:Mockito
1101:Mercury
1056:LOLCODE
931:Haskell
926:Harbour
886:FORTRAN
866:Fjölnir
861:FastAPI
791:Crystal
761:Clipper
696:Befunge
691:Beatnik
611:Amiga E
422:Haskell
383:Unicode
225:newline
186:console
182:print f
163:main( )
77:History
69:or run
67:compile
47:console
2288:GitHub
2235:
2174:
2079:7 July
2049:19 May
2018:19 May
1991:19 May
1960:19 May
1929:19 May
1785:"BCPL"
1699:
1655:
1606:Foobar
1561:XULJet
1546:XBLite
1526:web2py
1481:Turing
1461:TI-990
1426:Simula
1401:Scilab
1326:Racket
1296:Python
1271:Prolog
1221:PCASTL
1216:Pascal
1096:MATLAB
1066:MAC/65
1026:KERNAL
991:Jam.py
836:Elixir
831:Эль-76
806:Darwin
796:Cython
736:Carbon
631:AppJar
505:used,
474:Ubuntu
470:Debian
457:, and
420:, and
404:(LEDs)
326:(I/O)
295:Python
194:string
144:printf
93:(1978)
55:syntax
2769:Lenna
2759:GTUBE
2723:Acid
2712:Other
2551:Quine
2486:ETP-1
2139:(PDF)
2128:(PDF)
1731:(PDF)
1724:(PDF)
1496:Umple
1451:Swift
1396:Scala
1361:RGtk2
1356:Refal
1346:Rebol
1336:React
1291:PyGTK
1246:Plack
1226:PDP-8
1196:Oriel
1146:MUMPS
1141:Monad
1086:Magik
1011:JFace
956:Idris
906:Godot
881:Forth
871:Flask
851:எழில்
781:Cobra
776:COBOL
756:Clean
746:Charm
726:Cairo
671:BASIC
596:ALGOL
591:Aldor
557:(see
503:hello
486:hello
306:print
278:as a
229:ASCII
2665:List
2637:List
2528:UEIT
2313:2014
2246:2020
2233:ISBN
2212:2020
2185:2019
2172:ISBN
2147:2015
2081:2017
2051:2015
2020:2015
1993:2015
1962:2015
1931:2015
1881:2016
1851:2022
1803:2013
1771:2024
1739:2019
1697:ISBN
1653:ISBN
1556:Xojo
1511:Vala
1491:UEFI
1416:Self
1391:SARL
1386:SAKO
1381:Rust
1376:Ruby
1366:Ring
1331:Raku
1321:Rack
1306:QB64
1256:Plus
1251:Plua
1231:Perl
1151:MXML
1136:Mojo
1121:MMIX
1046:Lisp
1031:Kivy
1016:JUDO
996:Java
986:JADE
976:IRAF
941:HTML
921:Hack
876:Flix
841:Enyo
816:Deno
801:Dart
731:C/AL
701:BETA
686:BCPL
581:ABAP
568:APIs
526:Java
495:.deb
472:and
468:The
443:VHDL
414:Lisp
361:and
252:BCPL
246:The
132:main
109:BCPL
1566:Zig
1456:TeX
1411:Sed
1351:Red
1241:PHP
1181:Opa
1166:Nim
1081:MAD
1061:Lua
766:C++
666:AWK
646:Arc
586:Ada
522:Sun
511:GNU
320:C++
234:hi!
2821::
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2202:.
2166:.
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1983:.
1979:.
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1948:.
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1917:.
1867:.
1841:.
1837:.
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1787:.
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1691::
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2149:.
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1995:.
1964:.
1933:.
1883:.
1853:.
1805:.
1773:.
1741:.
1705:.
1661:.
1506:V
1316:R
1301:Q
1021:K
981:J
716:C
439:C
363:W
359:H
315:)
309:(
206:B
156:}
147:(
141:{
138:)
135:(
34:.
20:)
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