1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
<html><head><title>XLISP get-lambda-expression</title>
<link rel="stylesheet" type="text/css" href="reference.css">
</head>
<body>
<a href="../start.htm">Nyquist / XLISP 2.0</a> -
<a href="../manual/contents.htm">Contents</a> |
<a href="../tutorials/tutorials.htm">Tutorials</a> |
<a href="../examples/examples.htm">Examples</a> |
<a href="reference-index.htm">Reference</a>
<hr>
<h1>get-lambda-expression</h1>
<hr>
<p><table cellpadding="0" cellspacing="0" style="margin-left:10px"><tbody>
<tr valign="top">
<td><nobr>Type:</nobr></td>
<td><nobr> - </nobr></td>
<td width="100%"><nobr>function (subr)</nobr></td>
</tr>
<tr valign="top">
<td><nobr>Source:</nobr></td>
<td><nobr> - </nobr></td>
<td width="100%"><nobr>xlcont.c</nobr></td>
</tr>
</tbody></table></p>
<h2>Syntax</h2>
<dl>
<dt>(get-lambda-expression <i>closure</i>)</dt>
<dd><i>closure</i> - a closure object from a previously defined
<a href="defun.htm">function</a> or
<a href="defmacro.htm">macro</a><br>
returns - the original lambda expression</dd>
</dl>
<h2>Description</h2>
<p>The 'get-lambda-expression' function takes the 'closure' object and
returns a reconstruction of a
<a href="lambda.htm">lambda</a> or
<a href="defmacro.htm">macro</a> expression that defines the
'closure'. The parameter must be a 'closure' expression.</p>
<h2>Examples</h2>
<pre class="example">
(defun mine (a b) (print (+ a b))) <font color="#008844">; define MINE defun</font>
(get-lambda-expression (function mine)) <font color="#008844">; returns (LAMBDA (A B) (PRINT (+ A B)))</font>
(get-lambda-expression (lambda (a) (print a)) <font color="#008844">; returns (LAMBDA (A) (PRINT A))</font>
(defmacro plus (n1 n2) `(+ ,n1 ,n2)) <font color="#008844">; define PLUS macro</font>
(get-lambda-expression (function plus)) <font color="#008844">; returns (MACRO (N1 N2) (BACKQUOTE (+ (COMMA N1) (COMMA N2))))</font>
</pre>
<p>See the
<a href="../manual/xlisp-man-012.htm#get-lambda-expression">get-lambda-expression</a>
function in the <nobr>XLISP 2.0</nobr> manual.</p>
<p><nobr> <a href="#top">Back to Top</nobr></a></p>
<hr>
<a href="../start.htm">Nyquist / XLISP 2.0</a> -
<a href="../manual/contents.htm">Contents</a> |
<a href="../tutorials/tutorials.htm">Tutorials</a> |
<a href="../examples/examples.htm">Examples</a> |
<a href="reference-index.htm">Reference</a>
</body></html>
|
