alguidelines/content/NAVPatterns/3-cal-coding-guidelines/design/variable-capacity-mismatch/index.md

+++ 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';