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<H3>
Objects of the <STRONG>univ.ObjectIdentifier</STRONG> class
</H3>

<P>
Instances of <A HREF="univ.html#ObjectIdentifier">univ.ObjectIdentifier</A>
class implement the following additional methods:
</P>

<A NAME="isaprefix"></A>
<DL>
<DT><STRONG>isaprefix</STRONG>(<STRONG>oid</STRONG>)</DT>
<DD>
<P>
Returns true if the value of this <STRONG>ObjectIdentifier</STRONG> is
a lexicographical prefix of <STRONG>oid</STRONG> OBJECT IDENTIFIER.
</P>
</DD>
</DL>

<P>
The following methods emulate a mutable sequence object protocol:
</P>

<A NAME="__getitem__"></A>
<DL>
<DT><STRONG>__getitem__</STRONG>(<STRONG>index</STRONG>)</DT>
<DD>
<P>
Returns a [sub-]identifier (integer for single sub-id or
<STRONG>ObjectIdentifier</STRONG> class instance for a slice) by
<STRONG>index</STRONG> (integer or slice type).
</P>
</DD>
</DL>

<A NAME="__setitem__"></A>
<DL>
<DT><STRONG>__setitem__</STRONG>(<STRONG>index</STRONG>, 
<STRONG>oid</STRONG>)</DT>
<DD>
<P>
Sets [sub-]identifier <STRONG>oid</STRONG> by <STRONG>index</STRONG> (integer
or slice type).
</P>
</DD>
</DL>

<A NAME="__delitem__"></A>
<DL>
<DT><STRONG>__delitem__</STRONG>(<STRONG>index</STRONG>)</DT>
<DD>
<P>
Delete sub-identifier by <STRONG>index</STRONG> (integer or slice type).
</P>
</DD>
</DL>

<A NAME="append"></A>
<DL>
<DT><STRONG>append</STRONG>(<STRONG>suboid</STRONG>)</DT>
<DD>
<P>
Append a sub-identifier <STRONG>suboid</STRONG> to the
<STRONG>ObjectIdentifier</STRONG> object.
</P>
</DD>
</DL>

<A NAME="extend"></A>
<DL>
<DT><STRONG>extend</STRONG>(<STRONG>oid</STRONG>)</DT>
<DD>
<P>
Append a [sub-]identifier <STRONG>oid</STRONG> to the
<STRONG>ObjectIdentifier</STRONG> object.
</P>
</DD>
</DL>

<A NAME="index"></A>
<DL>
<DT><STRONG>index</STRONG>(<STRONG>suboid</STRONG>)</DT>
<DD>
<P>
Returns index of first occurrence of sub-identifier <STRONG>suboid</STRONG>
(integer).
</P>
</DD>
</DL>

<A NAME="__len__"></A>
<DL>
<DT><STRONG>__len__</STRONG>()</DT>
<DD>
<P>
Returns the number of sub-identifiers in <STRONG>ObjectIdentifier</STRONG>
object (as integer).
</P>
</DD>
</DL>

<A NAME="__add__"></A>
<A NAME="__radd__"></A>
<DL>
<DT><STRONG>__add__</STRONG>(<STRONG>oid</STRONG>)</DT>
<DT><STRONG>__radd__</STRONG>(<STRONG>oid</STRONG>)</DT>
<DD>
<P>
Returns concatenated <STRONG>ObjectIdentifier</STRONG> and [sub-]identifier
<STRONG>oid</STRONG> (operands reflected for __r*__ version).
</P>
</DD>
</DL>

<HR>

<ADDRESS>
ilya@glas.net
</ADDRESS>