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[Octave-bug-tracker] [bug #41629] "set (h)" should not return read only

From: Rik
Subject: [Octave-bug-tracker] [bug #41629] "set (h)" should not return read only properties
Date: Mon, 17 Mar 2014 01:27:14 +0000
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:27.0) Gecko/20100101 Firefox/27.0

Follow-up Comment #3, bug #41629 (project octave):

I applied the two patches together and they appear to work.  I'm uploading the
consolidated changeset so you can see the final result.

One thing I wondered about was the dispatch table in the is_readonly function.
 Is there any way to get C++ to do this for us?  Below is a small portion of
the dispatch table.

static bool
is_readonly (const graphics_object obj, const std::string& pname)
  bool retval = false;

  if (obj.isa ("root_figure"))
      retval = root_figure::properties::has_readonly_property (pname);
  else if (obj.isa ("figure"))
      retval = figure::properties::has_readonly_property (pname)

It seems like there ought to be a way to call something like the following

retval = obj.has_readonly_property (pname);

because the object already knows what it is and has an overloaded instance of
the has_readonly_property method depending on what kind of object it is.  The
syntax above doesn't work though.

(file #30923)

Additional Item Attachment:

File name: ro_props.cset                  Size:8 KB


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