1. beginner question
- Posted by dmccu at connect.ab.ca
Jan 23, 2002
Maybe I'm not understanding sequences as well as I think, but what
happens if you don't know what the length of the sequence is at the
start of the program and you want to keep adding to it? Do I have to
initialize an extra long sequence of a large amount, in my case say
1000 elements to be sure? If so, how do I do that? Do I have to write
out x{"","","","","", etc. 1000 times? I'm confused.
2. Re: beginner question
On Wednesday 23 January 2002 11:59 pm, you wrote:
>
> To "add to it," as you'd like to do, use append():
> mySeq = append(mySeq, anotherSeq)
>
> You can also use the following:
> mySeq &= anotherSeq
>
> I think. I'm not so sure about that last one.
append() and "&=" give very different results. Try this:
include print.e
sequence s1,s2
s1 = "Cat"
s2 = "Cat"
s1 = append(s1,"Dog")
s2 &= "Dog"
? s1
? s2
You'll see that the first instance - append - results in creating a new
"subsequence' embedded within the first: {67,97,116, {68,111,103} }
more or less "Cat{Dog}"
while the second method -"&=" - results in a concatenating of the two
strings : {67,97,116,68,111,103} or "CatDog".
If you are wanting to create an "array" of strings: i.e. {"Cat","Dog"}, then
s1 = append({s1},s2) does the job.
Hint: download Gabriel Boehm's print.e include file from the Euphoria
archives, it lets you see the contents of these things in plain English.
Regards,
Irv
