alguidelines/content/NAVPatterns/3-cal-coding-guidelines/design/variable-capacity-mismatch/index.md
2021-10-30 22:09:32 +02:00

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Markdown

+++
title = "Variable Capacity Mismatch"
weight = 1410
+++
Do not assign a value to a variable whose capacity is smaller.
It will throw an error at runtime.
Bad code
FileName@1010 : Text\[250\];
...
UploadedFileName@1016 : Text\[1024\];
...
FileName := UploadedFileName;
Good code
FileName@1010 : Text\[1024\];
...
UploadedFileName@1016 : Text\[1024\];
...
FileName := UploadedFileName;
Bad code
FileName@1010 : Text\[250\];
...
UploadedFileName@1016 : Text\[1024\];
...
FileName := UploadedFileName;
Good code
FileName@1010 : Text\[250\];
...
UploadedFileName@1016 : Text\[1024\];
...
FileName := COPYSTR(UploadedFileName,1,250); // In case only the first 250 chars are needed. Similar for fields
Bad code
VAR
ExceededNumberTxt@001 : 'ENU=Warning: Exceeded number of unsent documents/requests'
Subject@1002 : Text\[50\];
...
BEGIN
...
Subject := ExceededNumberTxt;
Good code
VAR
ExceededNumberTxt@001 : 'ENU=Warning: Exceeded number of unsent documents/requests'
Subject@1002 : Text\[100\];
...
BEGIN
...
Subject := ExceededNumberTxt';