Strings as Arrays - New Version of UDOs

[joachim-3]

Hi all -

thanks to the new csound parser (= the hard work of Steven, John, Tito
and others) which makes it now possible to return strings from UDOs, I
can provide a much simpler version of my Stray collection. They can be
useful for working with filenames or any collection of strings and/or
numbers. If a Stray consists of numbers, it can be converted to a
function table via StrayNumToFt. The UDOs can be found at
www.joachimheintz.de/soft/Strays.zip or in the attachment (examples
included). More examples and a complete documentation are in the UDO
repository (www.csounds.com/udo > Utilities).

Some examples:
ilen       StrayLen     "a b c d e"
 ilen -> 5
Sel        StrayGetEl   "a b c d e", 0
 Sel -> "a"
inum       StrayGetNum  "1 2 3 4 5", 0
 inum -> 1
ipos       StrayElMem   "a b c d e", "c"
 ipos -> 2
ipos       StrayNumMem  "1 2 3 4 5", 3
 ipos -> 2
Sres       StraySetEl   "a b c d e", "go", 0
 Sres -> "go a b c d e"
Sres       StraySetNum  "1 2 3 4 5", 0, 0
 Sres -> "0 1 2 3 4 5"
Srev       StrayRev     "a b c d e"
 Srev -> "e d c b a"
Sub        StraySub     "a b c d e", 1, 3
 Sub -> "b c"
Srem       StrayRemDup  "a b a c c d e e"
 Srem -> "a b c d e"
ift,iftlen StrayNumToFt "1 2 3 4 5", 1
 ift -> 1 (same as f 1 0 -5 -2 1 2 3 4 5)
 iftlen -> 5

Thanks for testing and reporting any problems. And, by the way, I am not
very happy with the code for the UDOs StrayExpr and Stray1Expr which are
used by StrayNumToFt
(http://www.csounds.com/udo/displayOpcode.php?opcode_id=118). I think
there is certainly a better solution, and if someone feels dedicated to
this sort of string parsing, I am happy to borrow his code.

Best -

        joachim

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