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37 lines
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<H1><A REV=MADE HREF="http://www.lispworks.com/"><IMG WIDTH=80 HEIGHT=65 ALT="[LISPWORKS]" SRC="../Graphics/LWSmall.gif" ALIGN=Bottom></A><A REL=TOP HREF="../Front/index.htm"><IMG WIDTH=237 HEIGHT=65 ALT="[Common Lisp HyperSpec (TM)]" SRC="../Graphics/CLHS_Sm.gif" ALIGN=Bottom></A> <A REL=PREV HREF="26_glo_n.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="26_a.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="26_glo_p.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<B>O</B> <P>
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<P><A NAME="object"><B>object</B></A> <I>n.</I> 1. any Lisp datum. ``The function <A REL=DEFINITION HREF="f_cons.htm#cons"><B>cons</B></A> creates an object which refers to two other objects.'' 2. (immediately following the name of a <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A>) an <A REL=DEFINITION HREF="#object"><I>object</I></A> which is of that <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A>, used to emphasize that the <A REL=DEFINITION HREF="#object"><I>object</I></A> is not just a <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> for an object of that <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A> but really an <A REL=DEFINITION HREF="26_glo_e.htm#element"><I>element</I></A> of the <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A> in cases where <A REL=DEFINITION HREF="#object"><I>objects</I></A> of that <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A> (such as <A REL=DEFINITION HREF="t_fn.htm#function"><B>function</B></A> or <A REL=DEFINITION HREF="t_class.htm#class"><B>class</B></A>) are commonly referred to by <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A>. ``The function <A REL=DEFINITION HREF="f_symb_1.htm#symbol-function"><B>symbol-function</B></A> takes a function name and returns a function object.'' <P>
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<P><A NAME="object-traversing"><B>object-traversing</B></A> <I>adj.</I> operating in succession on components of an <A REL=DEFINITION HREF="#object"><I>object</I></A>. ``The operators <A REL=DEFINITION HREF="f_mapc_.htm#mapcar"><B>mapcar</B></A>, <A REL=DEFINITION HREF="f_maphas.htm#maphash"><B>maphash</B></A>, <A REL=DEFINITION HREF="m_w_pkg_.htm#with-package-iterator"><B>with-package-iterator</B></A> and <A REL=DEFINITION HREF="f_countc.htm#count"><B>count</B></A> perform object-traversing operations.'' <P>
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<P><A NAME="open"><B>open</B></A> <I>adj.</I>, <I>v.t.</I> (a <A REL=DEFINITION HREF="26_glo_f.htm#file"><I>file</I></A>) 1. <I>v.t.</I> to create and return a <A REL=DEFINITION HREF="26_glo_s.htm#stream"><I>stream</I></A> to the <A REL=DEFINITION HREF="26_glo_f.htm#file"><I>file</I></A>. 2. <I>adj.</I> (of a <A REL=DEFINITION HREF="26_glo_s.htm#stream"><I>stream</I></A>) having been <I>opened</I>[1], but not yet <A REL=DEFINITION HREF="26_glo_c.htm#closed"><I>closed</I></A>. <P>
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<P><A NAME="operator"><B>operator</B></A> <I>n.</I> 1. a <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A>, <A REL=DEFINITION HREF="26_glo_m.htm#macro"><I>macro</I></A>, or <A REL=DEFINITION HREF="26_glo_s.htm#special_operator"><I>special operator</I></A>. 2. a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A> that names such a <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A>, <A REL=DEFINITION HREF="26_glo_m.htm#macro"><I>macro</I></A>, or <A REL=DEFINITION HREF="26_glo_s.htm#special_operator"><I>special operator</I></A>. 3. (in a <A REL=DEFINITION HREF="s_fn.htm#function"><B>function</B></A> <A REL=DEFINITION HREF="26_glo_s.htm#special_form"><I>special form</I></A>) the <A REL=DEFINITION HREF="26_glo_c.htm#cadr"><I>cadr</I></A> of the <A REL=DEFINITION HREF="s_fn.htm#function"><B>function</B></A> <A REL=DEFINITION HREF="26_glo_s.htm#special_form"><I>special form</I></A>, which might be either an <A REL=DEFINITION HREF="#operator"><I>operator</I></A>[2] or a <A REL=DEFINITION HREF="26_glo_l.htm#lambda_expression"><I>lambda expression</I></A>. 4. (of a <A REL=DEFINITION HREF="26_glo_c.htm#compound_form"><I>compound form</I></A>) the <A REL=DEFINITION HREF="26_glo_c.htm#car"><I>car</I></A> of the <A REL=DEFINITION HREF="26_glo_c.htm#compound_form"><I>compound form</I></A>, which might be either an <A REL=DEFINITION HREF="#operator"><I>operator</I></A>[2] or a <A REL=DEFINITION HREF="26_glo_l.htm#lambda_expression"><I>lambda expression</I></A>, and which is never <TT>(setf <A REL=DEFINITION HREF="26_glo_s.htm#symbol"></TT><I>symbol</I><TT></A>)</TT>. <P>
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<P><A NAME="optimize_quality"><B>optimize quality</B></A> <I>n.</I> one of several aspects of a program that might be optimizable by certain compilers. Since optimizing one such quality might conflict with optimizing another, relative priorities for qualities can be established in an <A REL=DEFINITION HREF="d_optimi.htm#optimize"><B>optimize</B></A> <A REL=DEFINITION HREF="26_glo_d.htm#declaration"><I>declaration</I></A>. The <A REL=DEFINITION HREF="26_glo_s.htm#standardized"><I>standardized</I></A> <A REL=DEFINITION HREF="#optimize_quality"><I>optimize qualities</I></A> are <TT>compilation-speed</TT> (speed of the compilation process), <TT>debug</TT> (ease of debugging), <TT>safety</TT> (run-time error checking), <TT>space</TT> (both code size and run-time space), and <TT>speed</TT> (of the object code). <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>Implementations</I></A> may define additional <A REL=DEFINITION HREF="#optimize_quality"><I>optimize qualities</I></A>. <P>
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<P><A NAME="optional_parameter"><B>optional parameter</B></A> <I>n.</I> A <A REL=DEFINITION HREF="26_glo_p.htm#parameter"><I>parameter</I></A> for which a corresponding positional <A REL=DEFINITION HREF="26_glo_a.htm#argument"><I>argument</I></A> is optional. If the <A REL=DEFINITION HREF="26_glo_a.htm#argument"><I>argument</I></A> is not supplied, a default value is used. See also <A REL=DEFINITION HREF="26_glo_s.htm#supplied-p_parameter"><I>supplied-p parameter</I></A>. <P>
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<P><A NAME="ordinary_function"><B>ordinary function</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> that is not a <A REL=DEFINITION HREF="26_glo_g.htm#generic_function"><I>generic function</I></A>. <P>
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<P><A NAME="ordinary_lambda_list"><B>ordinary lambda list</B></A> <I>n.</I> the kind of <A REL=DEFINITION HREF="26_glo_l.htm#lambda_list"><I>lambda list</I></A> used by <A REL=DEFINITION HREF="a_lambda.htm#lambda"><B>lambda</B></A>. See <A REL=DEFINITION HREF="26_glo_m.htm#modified_lambda_list"><I>modified lambda list</I></A> and <A REL=DEFINITION HREF="26_glo_e.htm#extended_lambda_list"><I>extended lambda list</I></A>. ``<A REL=DEFINITION HREF="m_defun.htm#defun"><B>defun</B></A> uses an ordinary lambda list.'' <P>
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<P><A NAME="otherwise_inaccessible_part"><B>otherwise inaccessible part</B></A> <I>n.</I> (of an <A REL=DEFINITION HREF="#object"><I>object</I></A>, O1) an <A REL=DEFINITION HREF="#object"><I>object</I></A>, O2, which would be made <A REL=DEFINITION HREF="26_glo_i.htm#inaccessible"><I>inaccessible</I></A> if O1 were made <A REL=DEFINITION HREF="26_glo_i.htm#inaccessible"><I>inaccessible</I></A>. (Every <A REL=DEFINITION HREF="#object"><I>object</I></A> is an <A REL=DEFINITION HREF="#otherwise_inaccessible_part"><I>otherwise inaccessible part</I></A> of itself.) <P>
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<P><A NAME="output"><B>output</B></A> <I>adj.</I> (of a <A REL=DEFINITION HREF="26_glo_s.htm#stream"><I>stream</I></A>) supporting output operations (i.e., being a ``data sink''). An <A REL=DEFINITION HREF="#output"><I>output</I></A> <A REL=DEFINITION HREF="26_glo_s.htm#stream"><I>stream</I></A> might also be an <A REL=DEFINITION HREF="26_glo_i.htm#input"><I>input</I></A> <A REL=DEFINITION HREF="26_glo_s.htm#stream"><I>stream</I></A>, in which case it is sometimes called a <A REL=DEFINITION HREF="26_glo_b.htm#bidirectional"><I>bidirectional</I></A> <A REL=DEFINITION HREF="26_glo_s.htm#stream"><I>stream</I></A>. See the <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> <A REL=DEFINITION HREF="f_in_stm.htm#output-stream-p"><B>output-stream-p</B></A>. <P>
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<P><HR>The following <A REL=META HREF="../Front/X3J13Iss.htm">X3J13 cleanup issue</A>, <I>not part of the specification</I>, applies to this section:<P><UL><LI> <A REL=CHILD HREF="../Issues/iss251.htm">OPTIMIZE-DEBUG-INFO:NEW-QUALITY</A><P></UL><HR>
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