Re: [frogs] How can I output Stream_event variables on the console?

[Marc Hohl <marc@xxxxxxxxxx>]

Carl Sorensen schrieb:
> On 2/24/10 12:28 PM, "Marc Hohl" <marc@xxxxxxxxxx> wrote:
>
>   
> > Hello Reinhold, hello Carl,
> >
> > Reinhold Kainhofer schrieb:
> >     
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > >
> > > Am Mittwoch, 24. Februar 2010 12:26:15 schrieb Carl Sorensen:
> > >  
> > >       
> > > > On 2/24/10 1:51 AM, "Marc Hohl" <marc@xxxxxxxxxx> wrote:
> > > >    
> > > >         
> > How can I set a breakpoint?
> >     
>
> Start by running gdb for lilypond:
>
> gdb lilypond
>
> at the gdb prompt, set a breakpoint:
>
> b Class::function 
>
> (with Class::function replaced by the actual routine you want to stop in)
>
> or 
>
> b sourcefile.cc:line
>
> where sourcefile.cc is the name of the source file of the code you're trying
> to test (no lily/ is necessary) and line is the line number.
>
> Once you have your breakpoint set, run the code
>
> run myfile.ly
>
> lilypond will then run, and stop at the breakpoint.
>
> Once it's stopped at the breakpoint, use pmusic to print the music event.
>   
I see. Thanks for the detailed explanation. I read through CG 9.6.2 
several times without
getting a glimpse. And now I see that the first commands in .gdbinit do 
exactly the same, i.e.
defining breakpoints ("b" stands for "breakpoint", well sure).

Should this information be included in 9.6.2? Probably not, because most 
people who want
to do some C++ hacking are familiar enogh with this stuff.
> [...]
>
>
>   
> > I'm sorry to say, but at the moment I am writing C stuff by looking at some
> > engraver files and copy/paste everything into my file that looks as if
> > it could
> > work. That's not really satisfying, but I try to learn it that way.
> >     
>
> Ouch, that's really hard.  Even if you have the right idea, the syntax of
> C++ can be so picky that you get errors from bad syntax.
>
> Perhaps you could post some test code, and get some feedback on it.
>   
I have Bjarne Stroustrup's C++ book on my desk, but 720 pages are a lot 
of stuff,
and it looks as if the book is mostly helpful to poeple who have already
some (more) experience in writing bigger projects in C.

I started uploading patches to rietveld, and from time to time, I will 
update the
files and include comments describing what I want to achieve if I can't 
get it
to work.

Thanks for your patience ...

Marc
> Thanks,
>
> Carl
>
>
>   


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