template_to_parse_param_value_pairs.m

function [param1,param2,param3] = template_to_parse_param_value_pairs(varargin)
% Input:
%   varargin	Parameter-Value pairs as detailed below.
%
% Parameter-Value pairs:
%   Parameter: 'Param1'
%   Value:  'Default' - (Default) Chooses default option.
%           'Option2' - Chooses the 2nd option.
%	Parameter: 'Param2'
%   Value: Any number. Default: 1.
%   Parameter: 'Param3'
%	Value:  Some cell array. Default: {1, 'default'}.

    % Handle parameter-value pairs
    param1 = lower('Default');
    param2 = 1;
    param3 = {1, 'default'};
    assert(mod(length(varargin),2) == 0, 'Even number of varargin arguments expected.')
    for i = 1:2:length(varargin)
        param = lower(varargin{i});
        value = varargin{i+1};
        if ischar(value) || (iscell(value) && all(cellfun(@(a) ischar(a), value)))
            value = lower(value);
        end

        switch param
            case 'param1'
                assert(any(strcmpi(value,{'Default','Option2'})), ...
                    ['Unexpected value for ' param ' parameter.'])
                param1 = value;
            case 'param2'
                param2 = value;
            case 'param3'
                param3 = value;
            otherwise
                error(['Invalid parameter: ' param '.'])
        end
    end
end