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Re: [Sc-devel] compiling synthDefs with dependence

Hi list

When teaching SC I frequently stumble into the problem that people
find it hard to grasp the distinction between server and language. It is not
just a matter of telling them once, but one has to do so repeatedly until
it becomes 2nd nature.

I see this very often, even when the difference has been explained:

b = Buffer.read(s,"sounds/a11wlk01.wav");

SynthDef("\aaa", { arg out=0, bufnum=0;
	Out.ar(out,
		PlayBuf.ar(1, b.bufnum, 1)
	)
}).load(s);

Synth(\aaa, [\bufnum, b])
It works fine, but not when var b has become something else or contains a stereo buf 
or they want to pass "c" as a buffer.

So I'm wondering if when compiling the synthDef, it would be possible to have
the compiler throw a warning, such as:

WARNING: your synthDef is dependent upon an external variable.

Or something similar.

Just an idea. Is it hard to implement?
good idea in principle, but one problem: when building Synthdefs programmatically, you may have lots of "external" variables - this is nothing incorrect. 

you can suggest your students to use closed functions normally, i.e.

SynthDef("\aaa", #{ arg out=0, bufnum=0;
	Out.ar(out,
		PlayBuf.ar(1, b.bufnum, 1)
	)
}).load(s);

dosen't look so beautiful though..
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