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doc: Use Octave coding conventions in @example blocks of docstrings. * accumarray.m, accumdim.m, bar.m, base2dec.m, bincoeff.m, bitcmp.m, bitset.m, celldisp.m, chop.m, clabel.m, cloglog.m, colon.m, compass.m, computer.m, contour3.m, contourc.m, corr.m, cstrcat.m, ctime.m, cylinder.m, date.m, dec2base.m, demo.m, dir.m, dlmwrite.m, expm.m, ezcontourf.m, ezcontour.m, ezmeshc.m, ezmesh.m, ezplot.m, ezsurfc.m, ezsurf.m, feather.m, findobj.m, flipdim.m, fplot.m, genvarname.m, getfield.m, hankel.m, hilb.m, hist.m, idivide.m, index.m, int2str.m, interp1.m, is_leap_year.m, ismember.m, isocolors.m, isonormals.m, isosurface.m, kurtosis.m, legendre.m, linkprop.m, logit.m, logm.m, __makeinfo__.m, __marching_cube__.m, median.m, mkoctfile.m, moment.m, mpoles.m, orderfields.m, pcg.m, pcr.m, plot3.m, plotmatrix.m, polyaffine.m, polygcd.m, poly.m, polyout.m, print.m, qp.m, quadgk.m, qzhess.m, randi.m, rat.m, refreshdata.m, residue.m, rose.m, rot90.m, saveas.m, saveobj.m, shiftdim.m, skewness.m, spaugment.m, spdiags.m, sqp.m, stem.m, str2num.m, strcat.m, strjust.m, strread.m, strsplit.m, structfun.m, subplot.m, subsindex.m, substruct.m, surfl.m, surfnorm.m, svds.m, uimenu.m, union.m, voronoi.m, warning_ids.m, wblpdf.m: Use Octave coding conventions in @example blocks of docstrings.
author Rik <octave@nomad.inbox5.com>
date Sat, 04 Feb 2012 22:12:50 -0800
parents 72c96de7a403
children f3d52523cde1
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1 ## Copyright (C) 2000-2012 Etienne Grossmann
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2 ## Copyright (C) 2009 VZLU Prague
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {[@var{v1}, @dots{}] =} getfield (@var{s}, @var{key}, @dots{})
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22 ## Extract a field from a structure (or a nested structure). For example:
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23 ##
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24 ## @example
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25 ## @group
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26 ## ss(1,2).fd(3).b = 5;
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27 ## getfield (ss, @{1,2@}, "fd", @{3@}, "b")
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28 ## @result{} 5
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29 ## @end group
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30 ## @end example
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31 ##
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32 ## Note that the function call in the previous example is equivalent to
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33 ## the expression
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34 ##
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35 ## @example
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36 ## @group
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37 ## i1 = @{1,2@}; i2 = "fd"; i3 = @{3@}; i4= "b";
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38 ## ss(i1@{:@}).(i2)(i3@{:@}).(i4)
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39 ## @result{} 5
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40 ##
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41 ## @end group
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42 ## @end example
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43 ## @seealso{setfield, rmfield, isfield, isstruct, fieldnames, struct}
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44 ## @end deftypefn
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45
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46 ## Author: Etienne Grossmann <etienne@cs.uky.edu>
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47
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48 function obj = getfield (s, varargin)
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49 if (nargin < 2)
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50 print_usage ();
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51 endif
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52 subs = varargin;
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53 flds = cellfun ("isclass", subs, "char");
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54 idxs = cellfun ("isclass", subs, "cell");
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55 if (all (flds | idxs))
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56 typs = merge (flds, {"."}, {"()"});
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57 obj = subsref (s, struct ("type", typs, "subs", subs));
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58 else
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59 error ("getfield: invalid index");
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60 endif
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61 endfunction
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62
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63 %!test
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64 %! x.a = "hello";
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65 %! assert(getfield(x,"a"),"hello");
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66 %!test
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67 %! ss(1,2).fd(3).b = 5;
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68 %! assert(getfield(ss,{1,2},'fd',{3},'b'),5)