MATLAB: Detecting the existence of alphabetical elements

regular expressionsstring parsing

Dear all, I would like to detect whether a string contains an alphabetical letter. A simple way of solving this problem is writing a function such as. But is there any better, more concise and faster way? Can one use, say, regular expressions and if so how?
thanks, Pat.
 function flag=detect_alphabet(mystring)
 referenceSet={'a','b','c','d',...,'z'};
 flag=false;
 for ii=1:length(mystring)
    if ismember(mystring(ii),referenceSet)
        flag=true;
        break
    end
 end

Best Answer

Perhaps best of all:
str = 'adsf2342adsfwerreoj9f3f';
str2 = '23423';
flag = any(isletter(str))
flag = any(isletter(str2))
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