Functional differences


ID	MCC-8
Title	The use of functions with (potential) different behaviour when deployed, shall be avoided.
Priority	Recommended
Severity level	6
Description	The use of functions with (potential) different behaviour when deployed, shall be avoided if possible. Otherwise their use needs manual review for documented reasons.
Rationale	Portability

manual review required

The following table shows the reviewing aspect.

Function	Rationale for review	Doc
`help`	MATLAB file comments are stripped out before MATLAB Runtime encryption. Note: actual behaviour seen in R2022b is a runtime error!	link
`printdlg`	In compiled mode, only one argument can be present in a call to `printdlg`	link
`which`	In compiled mode, `which` does not search the current folder.	link
`open`	In compiled mode, `open` does not search the current folder.	link
`pwd`	When compiled, the start directory of an application is context-specific, so using `pwd` might result in unexpected values.
`matlabroot`	Alternative to `matlabroot`, `ctfroot` can be usefull, but any folder operation should be programmed with care. For more information on `ctfroot` see MathWorks documentation. Also note the following Answer.
`isfile`	`isfile(fileName)` returns 1 if `fileName` is a file located on the specified path or in the current folder. Otherwise, `isfile` returns 0. Therefore, if the current folder in deployed mode is different, the result may be different, in case relative paths are used.
`isfolder`	`isfolder(folderName)` returns 1 if `folderName` is a folder located on the specified path or in the current folder. Otherwise, `isfolder` returns 0. Therefore, if the current folder in deployed mode is different, the result may be different, in case relative paths are used.