Re: [Quickfix-developers] Using DataDictionary.getFieldName from Ruby

[Oren M. <or...@qu...>]

Blech.  That wasn't automatic at all.  I definitely wouldn't describe  
it as magical.  That pass-by-ref bliss only works for input  
arguments.  Output arguments are another story.  I slogged through it  
though and checked in something that will do the trick, at least for  
strings.  In particular with getFieldName and getValueName, they now  
take two parameters and will return a string.  nil is returned if the  
name is not found.

--oren

On Oct 11, 2006, at 4:26 PM, Toli Kuznets wrote:

> when i pas another string (or a var pointing to a string) as the 3rd
> param, i get this error:
>>> name = "future name"
> => "future name"
>>> d.getValueName(Quickfix::Side.new.getField, Quickfix::Side_BUY(),  
>>> name)
> TypeError: in method 'getValueName', argument 4 of type  
> 'std::string &'
>         from (irb):21:in `getValueName'
>         from (irb):21
>
> I'm somewhat at a loss as to what i need to pass into this function.
> The SWIG code (QuickfixRuby.cpp:line 53138-53184) shows that the last
> arg is being converted to a pass-by-reference parameter to a C++ call.
> Reading up on SWIG indicates that pass-by-ref stuff should just work
> "magically" from Ruby
> (http://www.goto.info.waseda.ac.jp/~fukusima/ruby/swig-examples/ 
> reference/index.html)