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<TITLE>CLHS: Glossary-Section V</TITLE>
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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_u.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_w.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<B>V</B> <P>
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<P><A NAME="valid_array_dimension"><B>valid array dimension</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> suitable for use as an <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A> <A REL=DEFINITION HREF="26_glo_d.htm#dimension"><I>dimension</I></A>. Such a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> must be greater than or equal to zero, and less than the <A REL=DEFINITION HREF="#value"><I>value</I></A> of <A REL=DEFINITION HREF="v_ar_dim.htm#array-dimension-limit"><B>array-dimension-limit</B></A>. When multiple <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A> <A REL=DEFINITION HREF="26_glo_d.htm#dimension"><I>dimensions</I></A> are to be used together to specify a multi-dimensional <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>, there is also an implied constraint that the product of all of the <A REL=DEFINITION HREF="26_glo_d.htm#dimension"><I>dimensions</I></A> be less than the <A REL=DEFINITION HREF="#value"><I>value</I></A> of <A REL=DEFINITION HREF="v_ar_tot.htm#array-total-size-limit"><B>array-total-size-limit</B></A>. <P>
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<P><A NAME="valid_array_index"><B>valid array index</B></A> <I>n.</I> (of an <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>) a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> suitable for use as one of possibly several indices needed to name an <A REL=DEFINITION HREF="26_glo_e.htm#element"><I>element</I></A> of the <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A> according to a multi-dimensional Cartesian coordinate system. Such a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> must be greater than or equal to zero, and must be less than the corresponding <A REL=DEFINITION HREF="26_glo_d.htm#dimension"><I>dimension</I></A>[1] of the <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>. (Unless otherwise explicitly specified, the phrase ``a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of <I>valid array indices</I>'' further implies that the <A REL=DEFINITION HREF="26_glo_l.htm#length"><I>length</I></A> of the <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> must be the same as the <A REL=DEFINITION HREF="26_glo_r.htm#rank"><I>rank</I></A> of the <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>.) ``For a <TT>2</TT> by <TT>3</TT> array, valid array indices for the first dimension are <TT>0</TT> and <TT>1</TT>, and valid array indices for the second dimension are <TT>0</TT>, <TT>1</TT> and <TT>2</TT>.'' <P>
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<P><A NAME="valid_array_row-major_index"><B>valid array row-major index</B></A> <I>n.</I> (of an <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>, which might have any number of <A REL=DEFINITION HREF="26_glo_d.htm#dimension"><I>dimensions</I></A>[2]) a single <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> suitable for use in naming any <A REL=DEFINITION HREF="26_glo_e.htm#element"><I>element</I></A> of the <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>, by viewing the array's storage as a linear series of <A REL=DEFINITION HREF="26_glo_e.htm#element"><I>elements</I></A> in row-major order. Such a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> must be greater than or equal to zero, and less than the <A REL=DEFINITION HREF="26_glo_a.htm#array_total_size"><I>array total size</I></A> of the <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>. <P>
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<P><A NAME="valid_fill_pointer"><B>valid fill pointer</B></A> <I>n.</I> (of an <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>) a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> suitable for use as a <A REL=DEFINITION HREF="26_glo_f.htm#fill_pointer"><I>fill pointer</I></A> for the <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>. Such a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A> must be greater than or equal to zero, and less than or equal to the <A REL=DEFINITION HREF="26_glo_a.htm#array_total_size"><I>array total size</I></A> of the <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>. <P>
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<P>
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<P><A NAME="valid_logical_pathname_host"><B>valid logical pathname host</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A> that has been defined as the name of a <A REL=DEFINITION HREF="26_glo_l.htm#logical_host"><I>logical host</I></A>. See the <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> <A REL=DEFINITION HREF="f_ld_log.htm#load-logical-pathname-translations"><B>load-logical-pathname-translations</B></A>. <P>
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<P><A NAME="valid_pathname_device"><B>valid pathname device</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>, <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A>, <TT>:unspecific</TT>, or some other <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> defined by the <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementation</I></A> to be a <A REL=DEFINITION HREF="#valid_pathname_device"><I>valid pathname device</I></A>. <P>
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<P><A NAME="valid_pathname_directory"><B>valid pathname directory</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>, a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>strings</I></A>, <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A>, <TT>:wild</TT>, <TT>:unspecific</TT>, or some other <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> defined by the <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementation</I></A> to be a <I>valid directory component</I>. <P>
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<P><A NAME="valid_pathname_host"><B>valid pathname host</B></A> <I>n.</I> a <A REL=DEFINITION HREF="#valid_physical_pathname_host"><I>valid physical pathname host</I></A> or a <A REL=DEFINITION HREF="#valid_logical_pathname_host"><I>valid logical pathname host</I></A>. <P>
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<P><A NAME="valid_pathname_name"><B>valid pathname name</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>, <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A>, <TT>:wild</TT>, <TT>:unspecific</TT>, or some other <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> defined by the <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementation</I></A> to be a <A REL=DEFINITION HREF="#valid_pathname_name"><I>valid pathname name</I></A>. <P>
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<P><A NAME="valid_pathname_type"><B>valid pathname type</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>, <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A>, <TT>:wild</TT>, <TT>:unspecific</TT>. <P>
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<P><A NAME="valid_pathname_version"><B>valid pathname version</B></A> <I>n.</I> a non-negative <A REL=DEFINITION HREF="26_glo_i.htm#integer"><I>integer</I></A>, or one of <TT>:wild</TT>, <TT>:newest</TT>, <TT>:unspecific</TT>, or <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A>. The symbols <TT>:oldest</TT>, <TT>:previous</TT>, and <TT>:installed</TT> are <A REL=DEFINITION HREF="26_glo_s.htm#semi-standard"><I>semi-standard</I></A> special version symbols. <P>
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<P><A NAME="valid_physical_pathname_host"><B>valid physical pathname host</B></A> <I>n.</I> any of a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>, a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>strings</I></A>, or the symbol <TT>:unspecific</TT>, that is recognized by the implementation as the name of a host. <P>
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<P>
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<P><A NAME="valid_sequence_index"><B>valid sequence index</B></A> <I>n.</I> (of a <A REL=DEFINITION HREF="26_glo_s.htm#sequence"><I>sequence</I></A>) an <A REL=DEFINITION HREF="26_glo_i.htm#integer"><I>integer</I></A> suitable for use to name an <A REL=DEFINITION HREF="26_glo_e.htm#element"><I>element</I></A> of the <A REL=DEFINITION HREF="26_glo_s.htm#sequence"><I>sequence</I></A>. Such an <A REL=DEFINITION HREF="26_glo_i.htm#integer"><I>integer</I></A> must be greater than or equal to zero, and must be less than the <A REL=DEFINITION HREF="26_glo_l.htm#length"><I>length</I></A> of the <A REL=DEFINITION HREF="26_glo_s.htm#sequence"><I>sequence</I></A>. (If the <A REL=DEFINITION HREF="26_glo_s.htm#sequence"><I>sequence</I></A> is an <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>, the <A REL=DEFINITION HREF="#valid_sequence_index"><I>valid sequence index</I></A> is further constrained to be a <A REL=DEFINITION HREF="26_glo_f.htm#fixnum"><I>fixnum</I></A>.) <P>
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<P><A NAME="value"><B>value</B></A> <I>n.</I> 1. a. one of possibly several <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>objects</I></A> that are the result of an <A REL=DEFINITION HREF="26_glo_e.htm#evaluation"><I>evaluation</I></A>. b. (in a situation where exactly one value is expected from the <A REL=DEFINITION HREF="26_glo_e.htm#evaluation"><I>evaluation</I></A> of a <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A>) the <A REL=DEFINITION HREF="26_glo_p.htm#primary_value"><I>primary value</I></A> returned by the <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A>. c. (of <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>forms</I></A> in an <A REL=DEFINITION HREF="26_glo_i.htm#implicit_progn"><I>implicit progn</I></A>) one of possibly several <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>objects</I></A> that result from the <A REL=DEFINITION HREF="26_glo_e.htm#evaluation"><I>evaluation</I></A> of the last <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A>, or <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A> if there are no <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>forms</I></A>. 2. an <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> associated with a <A REL=DEFINITION HREF="26_glo_n.htm#name"><I>name</I></A> in a <A REL=DEFINITION HREF="26_glo_b.htm#binding"><I>binding</I></A>. 3. (of a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>) the <A REL=DEFINITION HREF="#value"><I>value</I></A> of the <A REL=DEFINITION HREF="26_glo_d.htm#dynamic_variable"><I>dynamic variable</I></A> named by that symbol. 4. an <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> associated with a <A REL=DEFINITION HREF="26_glo_k.htm#key"><I>key</I></A> in an <A REL=DEFINITION HREF="26_glo_a.htm#association_list"><I>association list</I></A>, a <A REL=DEFINITION HREF="26_glo_p.htm#property_list"><I>property list</I></A>, or a <A REL=DEFINITION HREF="26_glo_h.htm#hash_table"><I>hash table</I></A>. <P>
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<P><A NAME="value_cell"><B>value cell</B></A> <I>n.</I> <I>Trad.</I> (of a <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>) The <A REL=DEFINITION HREF="26_glo_p.htm#place"><I>place</I></A> which holds the <A REL=DEFINITION HREF="#value"><I>value</I></A>, if any, of the <A REL=DEFINITION HREF="26_glo_d.htm#dynamic_variable"><I>dynamic variable</I></A> named by that <A REL=DEFINITION HREF="26_glo_s.htm#symbol"><I>symbol</I></A>, and which is <I>accessed</I> by <A REL=DEFINITION HREF="f_symb_5.htm#symbol-value"><B>symbol-value</B></A>. See <A REL=DEFINITION HREF="26_glo_c.htm#cell"><I>cell</I></A>. <P>
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<P><A NAME="variable"><B>variable</B></A> <I>n.</I> a <A REL=DEFINITION HREF="26_glo_b.htm#binding"><I>binding</I></A> in the ``variable'' <A REL=DEFINITION HREF="26_glo_n.htm#namespace"><I>namespace</I></A>. See <A REL=CHILD HREF="03_abaa.htm">Section 3.1.2.1.1 (Symbols as Forms)</A>. <P>
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<P><A NAME="vector"><B>vector</B></A> <I>n.</I> a one-dimensional <A REL=DEFINITION HREF="26_glo_a.htm#array"><I>array</I></A>. <P>
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<P><A NAME="vertical-bar"><B>vertical-bar</B></A> <I>n.</I> the <A REL=DEFINITION HREF="26_glo_s.htm#standard_character"><I>standard character</I></A> that is called ``vertical bar'' (<TT></TT>|<TT></TT>). See <A REL=DEFINITION HREF="02_ac.htm#stdcharsthree">Figure 2-5</A>. <P>
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<P><HR>The following <A REL=META HREF="../Front/X3J13Iss.htm">X3J13 cleanup issues</A>, <I>not part of the specification</I>, apply to this section:<P><UL><LI> <A REL=CHILD HREF="../Issues/iss263.htm">PATHNAME-SUBDIRECTORY-LIST:NEW-REPRESENTATION</A><LI> <A REL=CHILD HREF="../Issues/iss266.htm">PATHNAME-UNSPECIFIC-COMPONENT:NEW-TOKEN</A><LI> <A REL=CHILD HREF="../Issues/iss014.htm">ARRAY-DIMENSION-LIMIT-IMPLICATIONS:ALL-FIXNUM</A><P></UL><HR>
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