MATLAB: Plzzz explain this… i’m new

regular expressiontext;

 regexprep( filecontent, 'R.*$', '', 'dotexceptnewline', 'lineanchors');

Best Answer

bharath - see regexp and regexprep. It appears that this line of code is trying to replace text using regexprep, looking for all occurrences of words or phrases (?) beginning with R and replacing with a blank string up to the end of a line (see details on dotexceptnewline and lineanchors).
For example, if
 filecontents = sprintf('Ralph\nRoger\nGeoff\nStaRWars\nCaR\nSpaRtan\nSpartan')
 filecontents =
    Ralph
    Roger
    Geoff
    StaRWars
    CaR
    SpaRtan
    Spartan
then
 regexprep( filecontents, 'R.*$', '', 'dotexceptnewline', 'lineanchors')
 ans =
          <--- empty
          <--- empty
    Geoff
    Sta
    Ca
    Spa
    Spartan
Try some examples on your own, removing the dotexceptnewline and lineanchors to see their effect.
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