Well, as far as I understand, in the past before there was a S type,
strings were parsed by the parser and added to a table and the index
assigned was how they were accessed under the hood by opcodes and
other part of code.. It seems to me that that's mostly the same now
taking a quick look.

You can use the strset and strget opcodes to assign text to a number
and then use that number to pass in to the opcode.


	opcode printString,i,i

ifile xin
Sval strget ifile
prints Sval

	endop


	instr 1	;Sound
strset p1, "testing\n"
i1 printString p1
	endin


will print:

Strsets[1]: 'testing
'
testing

(The strset gives the message about strsets[1]). The i num to give for
strset seems to require a little caution as one could easily overwrite
values in the strset table, but if you're setting it and getting it
within a single flow of code, it should probably be safe.

It would be a lot easier if Stypes were supported, but my guess is
that it's not simple to do, and at least there is this work around for
now.

steven


On 5/2/06, Rory Walsh <rorywalsh@ear.ie> wrote:
> Seems that way. The funny thing is that in the case of soundin for
> example, we have one parameter 'ifilecode' that is an i-type yet is
> accepts a string. If we try this in our own UDO's, i.e., pass a string
> when an i-type variable is expect we get an invalid argument?
> Perhaps/hopefully I've got this wrong but for instance check out the
> ultra useful UDO below!
>
> opcode  printString, i, i
> ifile xin
> print ifile
> endop
>
> instr 1
> i1 printString "testing"
> endin
>
> Rory.
>
> Steven Yi wrote:
> > Hi Rory,
> >
> > The manual seems to imply that S-types aren't supported:
> >
> > http://csounds.com/manual/html/opcode.html
> >
> > I'd love to be wrong on this though.
> >
> > steven
> >
> >
> > On 5/2/06, Rory Walsh <rorywalsh@ear.ie> wrote:
> >> Whenever I try to write a UDO that takes a string I get an error saving
> >> invalid input type? Is this not possible? Or is the only way of doing it
> >> to cast as an i-type before I pass the string? Cheers,
> >> Rory.
> >> --
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> >>
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