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TheDoubleH 2022-02-11 17:30:04 +00:00
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navpatterns/3-cal-coding-guidelines/design/by-reference-parameters/index.html
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@ -5,16 +5,16 @@
<meta name=generator content="Hugo 0.92.1">
<meta name=description content>
<title>By Reference Parameters :: AL Guidelines</title>
<link href=/css/nucleus.css?1644506469 rel=stylesheet>
<link href=/css/fontawesome-all.min.css?1644506469 rel=stylesheet>
<link href=/css/featherlight.min.css?1644506469 rel=stylesheet>
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<script src=/js/jquery.min.js?1644600600></script>
<style>:root #header+#content>#left>#rlblock_left{display:none!important}</style>
</head>
<body data-url=/navpatterns/3-cal-coding-guidelines/design/by-reference-parameters/>
@ -32,9 +32,9 @@ ALGuidelines.Dev
<input data-search-input id=search-by type=search placeholder=Search...>
<span data-search-clear><i class="fas fa-times"></i></span>
</div>
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<div class=highlightable>
<ul class=topics>
@ -258,19 +258,19 @@ ALGuidelines.Dev
<p>Do not declare parameters by reference if their values are not intended to be changed.</p>
<p>Unintentional value changes might propagate. Also, it might lead people to believe that value changes are intended.</p>
<p>Bad code</p>
<pre><code>LOCAL PROCEDURE ShowMessage@15(VAR Text@1000 : Text\[250\]);
<pre><code>LOCAL PROCEDURE ShowMessage@15(VAR Text@1000 : Text[250]);
BEGIN
Text := GetMessageText;
IF (Text &lt;\&gt; '') AND GenJnlLineInserted THEN
MESSAGE(Text);
Text := GetMessageText;
IF (Text &lt;&gt; '') AND GenJnlLineInserted THEN
MESSAGE(Text);
END;
</code></pre>
<p>Good code</p>
<pre><code>LOCAL PROCEDURE ShowMessage@15(Text@1000 : Text\[250\]);
<pre><code>LOCAL PROCEDURE ShowMessage@15(Text@1000 : Text[250]);
BEGIN
Text := GetMessageText;
IF (Text &lt;\&gt; '') AND GenJnlLineInserted THEN
MESSAGE(Text);
Text := GetMessageText;
IF (Text &lt;&gt; '') AND GenJnlLineInserted THEN
MESSAGE(Text);
END;
</code></pre>
<footer class=footline>
@ -285,12 +285,12 @@ END;
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