37 lines
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37 lines
4.3 KiB
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<A NAME="method"><I>System Class</I> <B>METHOD</B></A> <P>
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<P><B>Class Precedence List:</B><P>
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<A REL=DEFINITION HREF="#method"><B>method</B></A>, <A REL=DEFINITION HREF="t_t.htm#t"><B>t</B></A> <P>
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<P><B>Description:</B><P>
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<P>
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A <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>method</I></A> is an <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A> that represents a modular part of the behavior of a <A REL=DEFINITION HREF="26_glo_g.htm#generic_function"><I>generic function</I></A>. <P>
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A <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>method</I></A> contains <A REL=DEFINITION HREF="26_glo_c.htm#code"><I>code</I></A> to implement the <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>method</I></A>'s behavior, a sequence of <A REL=DEFINITION HREF="26_glo_p.htm#parameter_specializer"><I>parameter specializers</I></A> that specify when the given <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>method</I></A> is applicable, and a sequence of <A REL=DEFINITION HREF="26_glo_q.htm#qualifier"><I>qualifiers</I></A> that is used by the method combination facility to distinguish among <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>methods</I></A>. Each required parameter of each <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>method</I></A> has an associated <A REL=DEFINITION HREF="26_glo_p.htm#parameter_specializer"><I>parameter specializer</I></A>, and the <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>method</I></A> will be invoked only on arguments that satisfy its <A REL=DEFINITION HREF="26_glo_p.htm#parameter_specializer"><I>parameter specializers</I></A>. <P>
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The method combination facility controls the selection of <A REL=DEFINITION HREF="26_glo_m.htm#method"><I>methods</I></A>, the order in which they are run, and the values that are returned by the generic function. The object system offers a default method combination type and provides a facility for declaring new types of method combination. <P>
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<P><B>See Also:</B><P>
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<P>
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<A REL=CHILD HREF="07_f.htm">Section 7.6 (Generic Functions and Methods)</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/iss207.htm">JUN90-TRIVIAL-ISSUES:9</A><P></UL><HR>
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