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- <a name="Distribute-1"></a>
- <h4 class="subsubsection">2.7.14.3 Distribute</h4>
- <p>The function with the following virtual code representation is
- frequently useful for manipulating lists.
- <a name="index-distribute"></a>
- </p>
- <dl compact="compact">
- <dt> <em>T30</em></dt>
- <dd><p><code>distribute</code> = <code>(((nil,nil),nil),nil)</code>
- </p></dd>
- </dl>
- <p>This function takes a pair whose right side represents a list, and
- returns a list of pairs, with one pair for each item in the list. The
- left side of each pair is the left side of the original argument, and
- the right side is the corresponding item of the list. A semantics for
- this operation is specified by the following properties.
- </p>
- <dl compact="compact">
- <dt> <em>P39</em></dt>
- <dd><p>[[<code>distribute</code>]] <code>(<var>x</var>,nil)</code> = <code>nil</code>
- </p></dd>
- <dt> <em>P40</em></dt>
- <dd><p>[[<code>distribute</code>]] <code>(<var>x</var>,(<var>y</var>,<var>z</var>))</code> =
- <code>((<var>x</var>,<var>y</var>),</code>[[<code>distribute</code>]] <code>(<var>x</var>,<var>z</var>))</code>
- </p></dd>
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