comparing data stored in two m-files [closed]

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how to retrieve the data from m.file into another m.file? How to compare these two files?

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Referring to these posts matlab comes with a diff tool on board, offering an API.

com.mathworks.mde.difftool.DiffReportGroup.getInstance.showFileDiff(...
     filePathLeft, filePathRight, numColumns);
showUnsavedChangesDiff(filePathLeft,textString,numColumns)

See the referred posts for further details.