95 lines
4.1 KiB
HTML
95 lines
4.1 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head>
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<title>.</title>
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<style type="text/css">
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* { color: #000; background: #fff; max-width: 700px; }
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tt, pre { background: #dedede; color: #111; font-family: monospace;
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white-space: pre; display: block; width: 100%; }
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.indentedcode { margin-left: 2em; margin-right: 2em; }
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.codeblock {
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background: #dedede; color: #111; font-family: monospace;
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box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
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padding: 7px;
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display: block;
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}
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.indentedlist { margin-left: 2em; color: #000; }
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span { white-space: pre; }
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.text { color: #000; white-space: pre; background: #dedede; }
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.colon { color: #000; background: #dedede; }
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.note { color: #000; background: #dedede; }
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.str { color: #000; text-decoration: underline; background: #dedede; }
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.num { color: #000; background: #dedede; font-weight: bold; font-style: italic; }
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.fnum { color: #000; font-weight: bold; background: #dedede; }
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.ptr { color: #000; font-weight: bold; background: #dedede; }
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.fetch { color: #000; font-style: italic; background: #dedede; }
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.store { color: #000; font-style: italic; background: #dedede; }
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.char { color: #000; background: #dedede; }
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.inst { color: #000; background: #dedede; }
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.defer { color: #000; background: #dedede; }
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.imm { color: #000; font-weight: bold; background: #dedede; }
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.prim { color: #000; font-weight: bolder; background: #dedede; }
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.tt { white-space: pre; font-family: monospace; background: #dedede; }
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.h1, .h2, .h3, .h4 { white-space: normal; }
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.h1 { font-size: 125%; }
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.h2 { font-size: 120%; }
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.h3 { font-size: 115%; }
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.h4 { font-size: 110%; }
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.hr { display: block; height: 2px; background: #000000; }
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</style>
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</head><body>
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<p><br/><br/>
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Retro is written in a literate style. Most of the sources
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are in a format called Unu. This allows easy mixing of
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commentary and code blocks, making it simple to document
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the code.
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<br/><br/>
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As an example,
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<br/><br/>
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<tt class='indentedcode'># Determine The Average Word Name Length</tt>
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<br/><br/>
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<tt class='indentedcode'>To determine the average length of a word name two values</tt>
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<tt class='indentedcode'>are needed. First, the total length of all names in the</tt>
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<tt class='indentedcode'>Dictionary:</tt>
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<br/><br/>
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<tt class='indentedcode'>~~~</tt>
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<tt class='indentedcode'>#0 [ d:name s:length + ] d:for-each</tt>
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<tt class='indentedcode'>~~~</tt>
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<br/><br/>
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<tt class='indentedcode'>And then the number of words in the Dictionary:</tt>
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<br/><br/>
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<tt class='indentedcode'>~~~</tt>
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<tt class='indentedcode'>#0 [ drop n:inc ] d:for-each</tt>
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<tt class='indentedcode'>~~~</tt>
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<br/><br/>
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<tt class='indentedcode'>With these, a simple division is all that's left.</tt>
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<br/><br/>
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<tt class='indentedcode'>~~~</tt>
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<tt class='indentedcode'>/</tt>
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<tt class='indentedcode'>~~~</tt>
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<br/><br/>
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<tt class='indentedcode'>Finally, display the results:</tt>
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<br/><br/>
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<br/><br/>
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<tt class='indentedcode'>~~~</tt>
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<tt class='indentedcode'>'Average_name_length:_%n\n s:format s:put</tt>
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<tt class='indentedcode'>~~~</tt>
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<br/><br/>
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This illustrates the format. Only code in the fenced blocks
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(between ~~~ pairs) get extracted and run.
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<br/><br/>
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(Note: this only applies to source files; fences are not used
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when entering code interactively).
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<br/><br/>
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<br/><br/>
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The name Unu comes from the Maori language, where it means:
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<br/><br/>
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<tt class='indentedcode'>(verb) (-hia) pull out, withdraw, draw out, extract.</tt>
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<tt class='indentedcode'>Taken from https://maoridictionary.co.nz/</tt>
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</p>
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</body></html>
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