1. type question
- Posted by gertie at visionsix.com
Feb 09, 2003
problem:
gettok(string,"3",32)
what type is "3" ? Sequence, yeas?
global function gettok(sequence text, object n, object separator)
fails the integer(n) test
junk = n[1] -- junk = 51
fails the sequence(n) test
fails the sequence(n[1]) test
can be subdivided into n[1]
passes the atom(n) test -- = 51
debug says n={51-3} -- sequence
debug says junk = 51 -- atom
What happened to the "3" in n ? It is acting like i used a '3' !
Kat
2. Re: type question
----- Original Message -----
From: <gertie at visionsix.com>
To: "EUforum" <EUforum at topica.com>
Subject: type question
>
> problem:
>
> gettok(string,"3",32)
>
> what type is "3" ? Sequence, yeas?
>
> global function gettok(sequence text, object n, object separator)
>
> fails the integer(n) test
This is correct. integer(n) should return false.
> junk = n[1] -- junk = 51
This is correct. The character '3' is ASCII 51.
> fails the sequence(n) test
What? Does sequence(n) return zero?
> fails the sequence(n[1]) test
Good. n[1] is an integer - 51. Also known as character '3'.
> can be subdivided into n[1]
Of course - its a sequence.
> passes the atom(n) test -- = 51
What? Does atom(n) return true?
>
> debug says n={51-3} -- sequence
WHat? I don't know what you mean by the 51-3. Do you mean 51 minus 3 as the
value of the only element in a sequence?
> debug says junk = 51 -- atom
Correct.
> What happened to the "3" in n ? It is acting like i used a '3' !
You did use a '3'. EUphoria's string notation is a shorthand for this...
"3" is equivilent to {'3'}
Just as "Derek" is the same as {'D', 'e', 'r', 'e', 'k'}
----------------
cheers,
Derek Parnell
