Mapcur.html 4.1 KB

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  57. <a name="Mapcur-1"></a>
  58. <h4 class="subsubsection">2.7.13.6 Mapcur</h4>
  59. <p>An alternative form of recursive definition is the following.
  60. <a name="index-mapcur"></a>
  61. </p>
  62. <dl compact="compact">
  63. <dt> <em>T27</em></dt>
  64. <dd><p>[[<code>mapcur</code>]] <code><var>p</var></code> = <code>((nil,nil),((nil,nil),(<var>p</var>,nil)))</code>
  65. </p></dd>
  66. </dl>
  67. <p>This form is convenient for applications that cause themselves to be
  68. <a name="index-recursion-3"></a>
  69. applied recursively to a list of arguments. It has this semantics.
  70. </p>
  71. <dl compact="compact">
  72. <dt> <em>P34</em></dt>
  73. <dd><p>([[<code>mapcur</code>]] <code><var>p</var></code>) <code><var>x</var></code> =
  74. [[<code>map meta</code>]] [[<code>distribute</code>]] ([[<code>field</code>]] <code><var>p</var></code>) <code><var>x</var></code>
  75. </p></dd>
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