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Re: Is gcc able to handle anonymous functions?

From: Marc Hohl
Subject: Re: Is gcc able to handle anonymous functions?
Date: Wed, 04 Jul 2012 20:10:10 +0200
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Am 04.07.2012 13:29, schrieb David Kastrup:
Marc Hohl <address@hidden> writes:

Hello list,

the topic is somewhat over my head, but perhaps someone with more
insight can answer this question?
I think that gcc likely can, don't know about g++, and we don't want to
rely on it anyhow.

Well then, is there an alternative?

I want to get rid of (issue 1320), and I have managed to get all
definitions but Bar_line::non_empty_barline into scheme.

In lily/, I have

 Grob *bar = Pointer_group_interface::find_grob (right_col,
ly_symbol2scm ("elements"),

The simple approach

bool non_empty_barline =
ly_scm2bool (scm_call_1 (ly_lily_module_constant ("bar-line::non-empty-barline"), right_col->self_scm ()));


(define-public (bar-line::non-empty-barline grob)
 (and (grob::has-interface grob 'bar-line)
      (pair? (ly:grob-extent grob grob X))))

doesn't work.

I see that in lily/ the function above is defined as

Grob *
Pointer_group_interface::find_grob (Grob *me, SCM sym, bool (*pred) (Grob *))

What is bool (*pred) (Grob *)?

Is there a way to get a scheme function in this place, or do I have to put
the remaining definition of into another file?



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