Home > classes > @plist > isfield.m

isfield

PURPOSE ^

ISFIELD tests if the given field is one of the object properties.

SYNOPSIS ^

function varargout = isfield(varargin)

DESCRIPTION ^

 ISFIELD tests if the given field is one of the object properties.

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 DESCRIPTION: ISFIELD tests if the given field is one of the object
              properties.

 CALL:        isfield(a, 'field');

              The following call returns a parameter list object that
              contains the default parameter values:
              >> pl = isfield(plist, 'Params')

              The following call returns the cvs version number:
              >> ver = isfield(plist, 'Version')

              The following call returns the category:

              >> category = isfield(plist, 'Category')

 VERSION:     $Id: isfield.html,v 1.10 2008/03/31 10:27:42 hewitson Exp $

 HISTORY: 25-09-07 M Hewitson
             Creation

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CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function varargout = isfield(varargin)
0002 % ISFIELD tests if the given field is one of the object properties.
0003 %
0004 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0005 %
0006 % DESCRIPTION: ISFIELD tests if the given field is one of the object
0007 %              properties.
0008 %
0009 % CALL:        isfield(a, 'field');
0010 %
0011 %              The following call returns a parameter list object that
0012 %              contains the default parameter values:
0013 %              >> pl = isfield(plist, 'Params')
0014 %
0015 %              The following call returns the cvs version number:
0016 %              >> ver = isfield(plist, 'Version')
0017 %
0018 %              The following call returns the category:
0019 %
0020 %              >> category = isfield(plist, 'Category')
0021 %
0022 % VERSION:     $Id: isfield.html,v 1.10 2008/03/31 10:27:42 hewitson Exp $
0023 %
0024 % HISTORY: 25-09-07 M Hewitson
0025 %             Creation
0026 %
0027 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0028 
0029 VERSION  = '$Id: isfield.html,v 1.10 2008/03/31 10:27:42 hewitson Exp $';
0030 CATEGORY = 'Helper';
0031 
0032 % 'Params' Call
0033 if nargin == 2 && isa(varargin{1}, 'plist') && ischar(varargin{2})
0034   if strcmp(varargin{2}, 'Params')
0035     varargout{1} = plist();
0036     return
0037   elseif strcmp(varargin{2}, 'Version')
0038     varargout{1} = VERSION;
0039     return
0040   elseif strcmp(varargin{2}, 'Category')
0041     varargout{1} = CATEGORY;
0042     return
0043   end
0044 end
0045 
0046 as    = [];
0047 field = '';
0048 for j=1:nargin
0049   if isa(varargin{j}, 'plist')
0050     as = [as varargin{j}];
0051   end
0052   if ischar(varargin{j})
0053     field = varargin{j};
0054   end
0055 end
0056 
0057 res = zeros(size(as));
0058 for j=1:numel(as)
0059   try
0060     t = as(j).(field);
0061     res(j) = 1;
0062   catch
0063     res(j) = 0;
0064   end
0065 end
0066 
0067 varargout{1} = res;
0068

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