Re: [chuck-users] String concatenation

Norman, There's currently no support for building strings - strings are immutable once they are initialized from literals. String ops have been in development, but are waiting garbage collection to be added. A workaround for your task is to generate a large literal array of filenames in text and index them: ["a.wav","b.wav","c.wav","d.wav","e.wav","f.wav","g.wav","h.wav", "i.wav","j.wav","k.wav","l.wav","m.wav","n.wav","o.wav","p.wav", "q.wav","r.wav","s.wav","t.wav","u.wav","v.wav","w.wav","x.wav", "y.wav","z.wav","aa.wav","bb.wav","cc.wav","dd.wav","ee.wav"] @=> string names[];

By the way, I'm doing the split by elaborating on

SndBuf ibuf; "test.aif" => ibuf.read; 0 => ibuf.pos;

WvOut ofile; "out0.aif" => ofile.aifFilename;

ibuf => ofile => blackhole; 2::second => now;

ofile.closeFile;

Does that look reasonable, or am I misunderstanding something (on a few hours' acquaintance with ChucK)?

You might need parens on the function call: ofile.closeFile(); best, Graham On Mon, 9 Oct 2006, Norman wrote:

Greetings.

Is there any support for building up strings within ChucK?

I'd like to do something like

WvOut ofile; 0 => int idx; "out" + idx + ".aif" => ofile.aifFilename;

I'm trying to produce a script which will split an input file into short sections. I think I can see how to do most of it, but can't work out how to generate file names.

The "string" type is mentioned in passing in the 'type' section of the manual, but with no indication of what methods it might have (I tried "idx => ofile.append", but...). Googling for 'string' at chuck.csc.princeton.edu doesn't indicate that I've missed anything major. And I can't spot anything in the FAQ at , other than a `medium priority' note `string operations' in <http://wiki.cs.princeton.edu/ index.php/ChucK/Dev/DoThisNow>. Does this latter note mean that this isn't possible, but might be soon?

Thanks for any pointers.

Norman