tomwalters@0: % method of class @parameter
tomwalters@0: % 
bleeck@3: % (c) 2011, University of Southampton
bleeck@3: % Maintained by Stefan Bleeck (bleeck@gmail.com)
bleeck@3: % download of current version is on the soundsoftware site: 
bleeck@3: % http://code.soundsoftware.ac.uk/projects/aimmat
bleeck@3: % documentation and everything is on http://www.acousticscale.org
bleeck@3: 
bleeck@3: 
tomwalters@0: function val=exist(param,text,inbox)
tomwalters@0: % returns a boolean value that indicates if that string has a valid field
tomwalters@0: 
tomwalters@0: cont=param.entries;
tomwalters@0: nrent=length(cont);
tomwalters@0: 
tomwalters@0: if nargin<3 % search in all subsections
tomwalters@0:     inbox='all';
tomwalters@0: end
tomwalters@0: 
tomwalters@0: 
tomwalters@0: nr=getentrynumberbytext(param,text,inbox);
tomwalters@0: 
tomwalters@0: if nr>0
tomwalters@0:     val=1;
tomwalters@0: else
tomwalters@0:     val=0;  % we must return a logical value otherwise it can generate difficult errors
tomwalters@0: end