Difference between revisions 84603278 and 87903402 on enwiki

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HQ9+
'''HQ9+''' is a [[joke programming language]] created by [[Cliff Biffle]] that consists of only four [[command (computing)|commands]], each represented by a single character: H, Q, 9, and +.  It is not [[Turing-complete]], but it is highly efficient at certain types of [[computer program|programs]].

* The <code>H</code> command prints out [[Hello world program|"Hello, world!"]]
(contracted; show full)

There is also another joke language called '''HQ9++''', also known as '''HQ9+ with Classes''', an [[object-oriented]] version created by [[David Morgan-Mar]]. This adds a new command, <code>++</code>, which increments the accumulator twice and instantiates an object. Following the principle of [[information hiding]], it is not possible to access this object.


An neet example that shows that HQ9+ can be used for writing or doing simple pictures is the following: 
<pre>
Q

+++     +++      ++++++++++       +++             +++           ++++++++++
+++     +++      ++++++++++       +++             +++           ++++++++++
+++     +++      +++              +++             +++           +++    +++
+++++++++++      ++++++++++       +++             +++           +++    +++
+++++++++++      ++++++++++       +++             +++           +++    +++
+++     +++      +++              +++             +++           +++    +++
+++     +++      ++++++++++       ++++++++++      ++++++++++    ++++++++++
+++     +++      ++++++++++       ++++++++++      ++++++++++    ++++++++++


+++    +++        ++++++++++        ++++++++++     +++          ++++++++
+++    +++        ++++++++++        ++++++++++     +++          +++++++++
+++    +++        +++    +++        +++    +++     +++          +++    ++
+++ ++ +++        +++    +++        ++++++++++     +++          +++    +++
+++ ++ +++        +++    +++        ++++++++++     +++          +++    +++
+++ ++ +++        +++    +++        +++  +++       +++          +++    ++
+++ ++ +++        ++++++++++        +++   +++      ++++++++++   +++++++++
++++++++++        ++++++++++        +++    +++     ++++++++++   ++++++++
</pre> ⏎
⏎
==External links==

*[http://www.cliff.biffle.org/esoterica/hq9plus.html HQ9+]
*[http://www.dangermouse.net/esoteric/hq9plusplus.html HQ9++]
*[http://www.almnet.de/esolang/hq9plus.php online HQ9+ interpreter]
*[http://code.eachmapinject.com/esoteric/hq9plus.rb HQ9+ interpreter in] [[Ruby programming language|Ruby]]

[[Category:Esoteric programming languages]]

[[cs:HQ9+]]
[[es:HQ9+]]
[[it:HQ9+]]
[[ja:HQ9+]]
[[ko:HQ9+]]
[[pl:HQ9+]]