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<TITLE>CLHS: Section 6.1.1.5.2</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="06_aaea.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Previous]" SRC="../Graphics/Prev.gif" ALIGN=Bottom></A><A REL=UP HREF="06_aae.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Up]" SRC="../Graphics/Up.gif" ALIGN=Bottom></A><A REL=NEXT HREF="06_aaec.htm"><IMG WIDTH=40 HEIGHT=40 ALT="[Next]" SRC="../Graphics/Next.gif" ALIGN=Bottom></A></H1>
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<H2>
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6.1.1.5.2 Summary of Value Accumulation Clauses</H2> <P>
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The <TT>collect</TT> (or <TT>collecting</TT>) construct takes one <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> in its clause and adds the value of that <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> to the end of a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of values. By default, the <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of values is returned when the <A REL=DEFINITION HREF="m_loop.htm#loop"><B>loop</B></A> finishes. <P>
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The <TT>append</TT> (or <TT>appending</TT>) construct takes one <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> in its clause and appends the value of that <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> to the end of a <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of values. By default, the <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of values is returned when the <A REL=DEFINITION HREF="m_loop.htm#loop"><B>loop</B></A> finishes. <P>
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The <TT>nconc</TT> (or <TT>nconcing</TT>) construct is similar to the <TT>append</TT> construct, but its <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> values are concatenated as if by the function <TT>nconc</TT>. By default, the <A REL=DEFINITION HREF="26_glo_l.htm#list"><I>list</I></A> of values is returned when the <A REL=DEFINITION HREF="m_loop.htm#loop"><B>loop</B></A> finishes. <P>
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The <TT>sum</TT> (or <TT>summing</TT>) construct takes one <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> in its clause that must evaluate to a <A REL=DEFINITION HREF="26_glo_n.htm#number"><I>number</I></A> and accumulates the sum of all these <A REL=DEFINITION HREF="26_glo_n.htm#number"><I>numbers</I></A>. By default, the cumulative sum is returned when the <A REL=DEFINITION HREF="m_loop.htm#loop"><B>loop</B></A> finishes. <P>
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The <TT>count</TT> (or <TT>counting</TT>) construct takes one <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> in its clause and counts the number of times that the <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> evaluates to <A REL=DEFINITION HREF="26_glo_t.htm#true"><I>true</I></A>. By default, the count is returned when the <A REL=DEFINITION HREF="m_loop.htm#loop"><B>loop</B></A> finishes. <P>
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The <TT>minimize</TT> (or <TT>minimizing</TT>) construct takes one <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> in its clause and determines the minimum value obtained by evaluating that <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A>. By default, the minimum value is returned when the <A REL=DEFINITION HREF="m_loop.htm#loop"><B>loop</B></A> finishes. <P>
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The <TT>maximize</TT> (or <TT>maximizing</TT>) construct takes one <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A> in its clause and determines the maximum value obtained by evaluating that <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A>. By default, the maximum value is returned when the <A REL=DEFINITION HREF="m_loop.htm#loop"><B>loop</B></A> finishes. <P>
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For more information, see <A REL=CHILD HREF="06_ac.htm">Section 6.1.3 (Value Accumulation Clauses)</A>. <P>
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