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diff --git a/devdocs/elisp/lambda-expressions.html b/devdocs/elisp/lambda-expressions.html new file mode 100644 index 00000000..681f81ef --- /dev/null +++ b/devdocs/elisp/lambda-expressions.html @@ -0,0 +1,30 @@ + <h3 class="section">Lambda Expressions</h3> <p>A lambda expression is a function object written in Lisp. Here is an example: </p> <div class="example"> <pre class="example">(lambda (x) + "Return the hyperbolic cosine of X." + (* 0.5 (+ (exp x) (exp (- x))))) +</pre> +</div> <p>In Emacs Lisp, such a list is a valid expression which evaluates to a function object. </p> <p>A lambda expression, by itself, has no name; it is an <em>anonymous function</em>. Although lambda expressions can be used this way (see <a href="anonymous-functions">Anonymous Functions</a>), they are more commonly associated with symbols to make <em>named functions</em> (see <a href="function-names">Function Names</a>). Before going into these details, the following subsections describe the components of a lambda expression and what they do. </p> <table class="menu" border="0" cellspacing="0"> <tr> +<td align="left" valign="top">• <a href="lambda-components" accesskey="1">Lambda Components</a> +</td> +<td> </td> +<td align="left" valign="top">The parts of a lambda expression. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="simple-lambda" accesskey="2">Simple Lambda</a> +</td> +<td> </td> +<td align="left" valign="top">A simple example. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="argument-list" accesskey="3">Argument List</a> +</td> +<td> </td> +<td align="left" valign="top">Details and special features of argument lists. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="function-documentation" accesskey="4">Function Documentation</a> +</td> +<td> </td> +<td align="left" valign="top">How to put documentation in a function. </td> +</tr> </table><div class="_attribution"> + <p class="_attribution-p"> + Copyright © 1990-1996, 1998-2022 Free Software Foundation, Inc. <br>Licensed under the GNU GPL license.<br> + <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Lambda-Expressions.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Lambda-Expressions.html</a> + </p> +</div> |