-
Notifications
You must be signed in to change notification settings - Fork 4
Expand file tree
/
Copy path543.html
More file actions
140 lines (140 loc) · 9.76 KB
/
Copy path543.html
File metadata and controls
140 lines (140 loc) · 9.76 KB
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>SmallBASIC | EMPTY</title>
<meta name="description" content="Returns true if x is: a zero length array, an empty string, an integer or real with the value 0.">
<link rel="canonical" href="543">
<link rel="keywords" href="EMPTY (x)">
<link rel="stylesheet" href="/css/style.css">
<link rel="icon" type="image/png" href="/images/sb-desktop-32x32.png">
<script src="/clipboard.js"></script>
</head>
<body>
<button onclick="topFunction()" id="BackToTopBtn" title="Go to top">⯅</button>
<script src="/backtotop.js"></script>
<div class="wrapAll clearfix">
<nav class="navigation">
<div class="logo">
<a href="/"><img src='/images/sb-logo.png?v=2' alt="logo"></a>
</div>
<div class="navlinks">
<a href="/pages/download.html">Download</a>
<a href="/pages/news.html">News</a>
<a href="/pages/community.html">Community</a>
<a href="/pages/articles.html">Resources</a>
<a class='active' href="/pages/reference.html">Language Reference</a>
<a href="/pages/guide.html">SmallBASIC Manual</a>
</div>
</nav>
<div class="mainsection">
<div class="tabs clearfix">
<div class="tabsRight">
<a target="_github" href="https://github.com/smallbasic/smallbasic.github.io/blob/master/_build/reference/543-data-empty.markdown">Edit</a>
<a target="_github" href="https://github.com/smallbasic/smallbasic.github.io/commits/master/_build/reference/543-data-empty.markdown">History</a>
</div>
</div>
<div class="article">
<h1>EMPTY</h1>
<blockquote>EMPTY (x)</blockquote>
<div class="siteSub">
<p>
<a href="/">Home</a> >
<a href="/pages/reference.html">Reference</a> >
<a href="/pages/data.html">Data</a>
</p>
</div>
<p>Returns true if x is</p>
<ul>
<li>a zero length array</li>
<li>an empty string</li>
<li>a number with the value 0.</li>
</ul>
<h3 id="example">Example</h3>
<div class="sourceCode" id="cb1"><pre
class="sourceCode smallbasic"><code class="sourceCode smallbasic"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>s = <span class="st">""</span></span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a>a = []</span>
<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a><span class="dt">dim</span> b</span>
<span id="cb1-4"><a href="#cb1-4" aria-hidden="true" tabindex="-1"></a>i = <span class="dv">0</span></span>
<span id="cb1-5"><a href="#cb1-5" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-6"><a href="#cb1-6" aria-hidden="true" tabindex="-1"></a><span class="kw">if(</span><span class="dt">empty</span>(s)) <span class="kw">then pr</span>int <span class="st">"s is empty"</span></span>
<span id="cb1-7"><a href="#cb1-7" aria-hidden="true" tabindex="-1"></a><span class="kw">if(</span><span class="dt">empty</span>(a)) <span class="kw">then pr</span>int <span class="st">"a is empty"</span></span>
<span id="cb1-8"><a href="#cb1-8" aria-hidden="true" tabindex="-1"></a><span class="kw">if(</span><span class="dt">empty</span>(b)) <span class="kw">then pr</span>int <span class="st">"b is empty"</span></span>
<span id="cb1-9"><a href="#cb1-9" aria-hidden="true" tabindex="-1"></a><span class="kw">if(</span><span class="dt">empty</span>(i)) <span class="kw">then pr</span>int <span class="st">"i is empty"</span></span></code></pre></div>
<div class="lavenderBox">
<div class="header">Code samples using EMPTY</div>
<div class="linklist">
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/2048.bas">2048.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/7gables.bas">7gables.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/utilities/agendus.bas">agendus.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/network/anomail.bas">anomail.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/checkers.bas">checkers.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/chess.bas">chess.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/applications/CSV_Viewer.bas">CSV_Viewer.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/applications/filemanager.bas">filemanager.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/misc/Other graphics/g2 Life.bas">g2 Life.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/misc/Other graphics/g3 Life.bas">g3 Life.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/hanoi.bas">hanoi.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/klotski.bas">klotski.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/mobile/klotski.bas">klotski.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/klotski_puzzle.bas">klotski_puzzle.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/klotski_solver.bas">klotski_solver.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/applications/memoryTest.bas">memoryTest.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/memorytest.bas">memorytest.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/applications/palm_cli.bas">palm_cli.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/utilities/pdocview.bas">pdocview.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/pirate.bas">pirate.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/mathematics/radish.bas">radish.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/rogue trader.bas">rogue trader.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/misc/Misc Bpf/slide sq w mouse.bas">slide sq w mouse.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 2/sliding blocks puzzle.bas">sliding blocks puzzle.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/misc/Misc Bpf/sliding blocks.bas">sliding blocks.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 2/sokoban.bas">sokoban.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/sokoban.bas">sokoban.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/graphics 4/sokoban.bas">sokoban.bas </a>
<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/applications/sudoku.bas">sudoku.bas </a>
</div>
</div>
<div class="lavenderBox">
<div class="header">Data</div>
<div class="linklist">
<a href="/reference/581.html">APPEND </a>
<a href="/reference/1432.html">ARRAY </a>
<a href="/reference/569.html">DATA </a>
<a href="/reference/542.html">DELETE </a>
<a href="/reference/570.html">DIM </a>
<a href="/reference/543.html"><strong>EMPTY</strong> </a>
<a href="/reference/571.html">ERASE </a>
<a href="/reference/544.html">INSERT </a>
<a href="/reference/555.html">ISARRAY </a>
<a href="/reference/556.html">ISDIR </a>
<a href="/reference/557.html">ISFILE </a>
<a href="/reference/558.html">ISLINK </a>
<a href="/reference/1430.html">ISMAP </a>
<a href="/reference/559.html">ISNUMBER </a>
<a href="/reference/560.html">ISSTRING </a>
<a href="/reference/561.html">LBOUND </a>
<a href="/reference/562.html">LEN </a>
<a href="/reference/546.html">READ </a>
<a href="/reference/547.html">REDIM </a>
<a href="/reference/572.html">RESTORE </a>
<a href="/reference/548.html">SEARCH </a>
<a href="/reference/549.html">SORT </a>
<a href="/reference/550.html">SWAP </a>
<a href="/reference/567.html">UBOUND </a>
</div>
</div>
</div>
<div class="pagefooter">
This page was last edited on Mon, 27 Feb 2023 11:17:16 +0100
|
<a href="https://en.wikipedia.org/wiki/Markdown" target="_blank" rel="nofollow">Markdown</a>
processed with
<a href="https://pandoc.org/MANUAL.html#pandocs-markdown" target="_blank" rel="nofollow">pandoc 3.1.12.1</a>
</div>
</div>
</div>
</body>
</html>