27 lines
712 B
Markdown
27 lines
712 B
Markdown
+++
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title = "By Reference Parameters"
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weight = 280
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tags = ["C/AL"]
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categories = ["Best Practice"]
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+++
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Do not declare parameters by reference if their values are not intended to be changed.
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Unintentional value changes might propagate. Also, it might lead people to believe that value changes are intended.
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Bad code
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LOCAL PROCEDURE ShowMessage@15(VAR Text@1000 : Text[250]);
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BEGIN
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Text := GetMessageText;
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IF (Text <> '') AND GenJnlLineInserted THEN
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MESSAGE(Text);
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END;
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Good code
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LOCAL PROCEDURE ShowMessage@15(Text@1000 : Text[250]);
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BEGIN
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Text := GetMessageText;
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IF (Text <> '') AND GenJnlLineInserted THEN
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MESSAGE(Text);
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END;
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