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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>O</title><link rel="stylesheet" href="doc.css" type="text/css"></head><body><h1>O</h1><dl><dt><a name="*OS"><code>*OS</code></a><dd>A global constant holding the name of the operating system. Possible valuesinclude <code>"Linux"</code>, <code>"FreeBSD"</code>, <code>"Darwin"</code> or<code>"Cygwin"</code>.<p><pre><code>: *OS-> "Linux"</code></pre><dt><a name="obj"><code>(obj (typ var [hook] val ..) var2 val2 ..) -> obj</code></a><dd>Finds or creates a database object (using <code><ahref="refR.html#request">request</a></code>) corresponding to <code>(typ var[hook] val ..)</code>, and initializes additional properties using the<code>varN</code> and <code>valN</code> arguments.<p><pre><code>: (obj ((+Item) nr 2) nm "Spare Part" sup `(db 'nr '+CuSu 2) inv 100 pr 1250)-> {3-2}</code></pre><dt><a name="object"><code>(object 'sym 'typ ['sym 'any ..]) -> obj</code></a><dd>Defines <code>sym</code> to be an object of type <code>typ</code>. Theproperty list is initialized with all optionally supplied key-value pairs. Seealso <code><a href="ref.html#oop">OO Concepts</a></code>, <code><ahref="refN.html#new">new</a></code>, <code><ahref="refT.html#type">type</a></code> and <code><ahref="refI.html#isa">isa</a></code>.<p><pre><code>: (object 'Obj '(+A +B +C) 'a 1 'b 2 'c 3)-> Obj: (show 'Obj)Obj (+A +B +C) c 3 b 2 a 1-> Obj</code></pre><dt><a name="oct"><code>(oct 'num) -> sym<br>(oct 'sym) -> num</code></a><dd>Converts a number <code>num</code> to an octal string, or an octal string<code>sym</code> to a number. See also <code><ahref="refH.html#hex">hex</a></code> and <code><ahref="refF.html#format">format</a></code>.<p><pre><code>: (oct 73)-> "111": (oct "111")-> 73</code></pre><dt><a name="off"><code>(off sym ..) -> NIL</code></a><dd>Stores <code>NIL</code> in the <code>VAL</code>'s of all argument symbols<code>sym</code>. See also <code><a href="refO.html#on">on</a></code>, <code><ahref="refO.html#onOff">onOff</a></code>, <code><ahref="refZ.html#zero">zero</a></code> and <code><ahref="refO.html#one">one</a></code>.<p><pre><code>: (off A B)-> NIL: A-> NIL: B-> NIL</code></pre><dt><a name="offset"><code>(offset 'lst1 'lst2) -> cnt | NIL</code></a><dd>Returns the <code>cnt</code> position of the tail list <code>lst1</code> in<code>lst2</code>, or <code>NIL</code> if it is not found. See also <code><ahref="refI.html#index">index</a></code>.<p><pre><code>: (offset '(c d e f) '(a b c d e f))-> 3: (offset '(c d e) '(a b c d e f))-> NIL</code></pre><dt><a name="on"><code>(on sym ..) -> T</code></a><dd>Stores <code>T</code> in the <code>VAL</code>'s of all argument symbols<code>sym</code>. See also <code><a href="refO.html#off">off</a></code>,<code><a href="refO.html#onOff">onOff</a></code>, <code><ahref="refZ.html#zero">zero</a></code> and <code><ahref="refO.html#one">one</a></code>.<p><pre><code>: (on A B)-> T: A-> T: B-> T</code></pre><dt><a name="one"><code>(one sym ..) -> 1</code></a><dd>Stores <code>1</code> in the <code>VAL</code>'s of all argument symbols<code>sym</code>. See also <code><a href="refZ.html#zero">zero</a></code>,<code><a href="refO.html#on">on</a></code>, <code><ahref="refO.html#off">off</a></code> and <code><ahref="refO.html#onOff">onOff</a></code>.<p><pre><code>: (one A B)-> 1: A-> 1: B-> 1</code></pre><dt><a name="onOff"><code>(onOff sym ..) -> flg</code></a><dd>Logical negates the <code>VAL</code>'s of all argument symbols<code>sym</code>. Returns the new value of the last symbol. See also <code><ahref="refO.html#on">on</a></code>, <code><a href="refO.html#off">off</a></code>,<code><a href="refZ.html#zero">zero</a></code> and <code><ahref="refO.html#one">one</a></code>.<p><pre><code>: (onOff A B)-> T: A-> T: B-> T: (onOff A B)-> NIL: A-> NIL: B-> NIL</code></pre><dt><a name="open"><code>(open 'sym) -> cnt | NIL</code></a><dd>Opens the file <code>sym</code> in read/write mode, and returns a filedescriptor <code>cnt</code> (or <code>NIL</code> on error). If the file does notexist, it is created. The file descriptor can be used in subsequent calls to<code><a href="refI.html#in">in</a></code> and <code><ahref="refO.html#out">out</a></code>. See also <code><ahref="refC.html#close">close</a></code>.<p><pre><code>: (open "x")-> 3</code></pre><dt><a name="opid"><code>(opid) -> pid | NIL</code></a><dd>Returns the corresponding process ID when the current output channel iswriting to a pipe, otherwise <code>NIL</code>. See also <code><ahref="refI.html#ipid">ipid</a></code> and <code><ahref="refO.html#out">out</a></code>.<p><pre><code>: (out '(cat) (call 'ps "-p" (opid))) PID TTY TIME CMD 7127 pts/3 00:00:00 cat-> T</code></pre><dt><a name="opt"><code>(opt) -> sym</code></a><dd>Return the next command line argument (option) as a string, and remove itfrom the remaining command line arguments. See also <code><ahref="ref.html#invoc">Invocation</a></code> and <code><ahref="refA.html#argv">argv</a></code>.<p><pre><code>$ ./p -"de f () (println 'opt (opt))" -f abc -byeopt "abc"</code></pre><dt><a name="or"><code>(or 'any ..) -> any</code></a><dd>Logical OR. The expressions <code>any</code> are evaluated from left toright. If a non-<code>NIL</code> value is encountered, it is returnedimmediately. Else the result of the last expression is returned.<p><pre><code>: (or (= 3 3) (read))-> T: (or (= 3 4) (read))abc-> abc</code></pre><dt><a name="out"><code>(out 'any . prg) -> any</code></a><dd>Opens <code>any</code> as output channel during the execution of<code>prg</code>. The current output channel will be saved and restoredappropriately. If the argument is <code>NIL</code>, standard output is used. Ifthe argument is a symbol, it is used as a file name (opened in "append" mode ifthe first character is "<code>+</code>"). If it is a positve number, it is usedas the descriptor of an open file. If it is a negative number, the saved outputchannel such many levels above the current one is used. Otherwise (if it is alist), it is taken as a command with arguments, and a pipe is opened for output.See also <code><a href="refO.html#opid">opid</a></code>, <code> <ahref="refC.html#call">call</a></code>, <code><ahref="refI.html#in">in</a></code>, <code> <ahref="refP.html#pipe">pipe</a></code>, <code> <ahref="refC.html#ctl">ctl</a></code>, <code><ahref="refC.html#close">close</a></code> and <code><ahref="refL.html#load">load</a></code>.<p><pre><code>: (out "a" (println 123 '(a b c) 'def)) # Write one line to file "a"-> def</code></pre></dl></body></html>⌨️ 快捷键说明
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