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    Metadata details:
    filename: vl_argparse.m
    path of file: ./repos/2015_Face_Detection/matlab_12
    
    the code of the file until where you have to start completion: function [opts, args] = vl_argparse(opts, args)
% VL_ARGPARSE  Parse list of parameter-value pairs
%   OPTS = VL_ARGPARSE(OPTS, ARGS) updates the structure OPTS based on
%   the specified parameter-value pairs ARGS={PAR1, VAL1, ... PARN,
%   VALN}. The function produces an error if an unknown parameter name
%   is passed on. Values that are structures are copied recursively.
%
%   Any of the PAR, VAL pairs can be replaced by a structure; in this
%   case, the fields of the structure are used as paramaters and the
%   field values as values.
%
%   [OPTS, ARGS] = VL_ARGPARSE(OPTS, ARGS) copies any parameter in
%   ARGS that does not match OPTS back to ARGS instead of producing an
%   error. Options specified as structures are expaned back to PAR,
%   VAL pairs.
%
%   Example::
%     The function can be used to parse a list of arguments
%     passed to a MATLAB functions:
%
%       function myFunction(x,y,z,varargin)
%       opts.parameterName = defaultValue ;
%       opts = vl_argparse(opts, varargin)
%
%     If only a subset of the options should be parsed, for example
%     because the other options are interpreted by a subroutine, then
%     use the form
%

    
function [opts, args] = vl_argparse(opts, args)
% VL_ARGPARSE  Parse list of parameter-value pairs
%   OPTS = VL_ARGPARSE(OPTS, ARGS) updates the structure OPTS based on
%   the specified parameter-value pairs ARGS={PAR1, VAL1, ... PARN,
%   VALN}. The function produces an error if an unknown parameter name
%   is passed on. Values that are structures are copied recursively.
%
%   Any of the PAR, VAL pairs can be replaced by a structure; in this
%   case, the fields of the structure are used as paramaters and the
%   field values as values.
%
%   [OPTS, ARGS] = VL_ARGPARSE(OPTS, ARGS) copies any parameter in
%   ARGS that does not match OPTS back to ARGS instead of producing an
%   error. Options specified as structures are expaned back to PAR,
%   VAL pairs.
%
%   Example::
%     The function can be used to parse a list of arguments
%     passed to a MATLAB functions:
%
%       function myFunction(x,y,z,varargin)
%       opts.parameterName = defaultValue ;
%       opts = vl_argparse(opts, varargin)
%
%     If only a subset of the options should be parsed, for example
%     because the other options are interpreted by a subroutine, then
%     use the form
%
%      [opts, varargin] = vl_argparse(opts, varargin)
%
%     that copies back to VARARGIN any unknown parameter.
%
%   See also: VL_HELP().

% Authors: Andrea Vedaldi

% Copyright (C) 2015 Andrea Vedaldi.
% Copyright (C) 2007-12 Andrea Vedaldi and Brian Fulkerson.
% All rights reserved.
%
% This file is part of the VLFeat library and is made available under
% the terms of the BSD license (see the COPYING file).

if ~isstruct(opts), error('OPTS must be a structure') ; end