Add several values to IntList

Processing Coding Questions
1

Hi,

I’m starting to use IntList in a project, not absolutely comfortable with everything yet…
I’m seeing in the documentation that I can add several int at once with myList.append(values) or myList.append(list) but each time i’m trying to add something more than a single integer, i’m getting this error:

the function "append()" expects parameters like: "append(int)"

Does any body have some experience with this?

thanks!

2

Hi! Like this:

IntList inventory = new IntList();
inventory.append(1);
inventory.append(new int[] {2, 3, 4});
3

@hamoid thanks a lot ! Among all the things I’ve tried I don’t think I would ever find this one by myself!

Thanks again

4

Indeed there’s no explanation whatsoever about what .append(values) and .append(list) arguments actually mean! :-1:

I had to look at the source code in order to know all of its overloaded signatures: :roll_eyes:

final IntList vals = new IntList();

vals.append(0);
println(vals);

vals.append(new int[] { 84, 15, 102 });
println(vals);

vals.append(new IntList( -5, 11 ));
println(vals);

exit();
5

Indeed a good way to proceed!
I’ll keep that in mind a try to dig myself in the source code next time i’m facing that problem! :+1:

6

Also, it’s a pity we need to create a whole array in order to pass multiple values to append().
vals.append(new int[] { 84, 15, 102 });

Funny, IntList’s constructor is overloaded to do just that:
vals.append(new IntList( -5, 11 ));

By just changing public void append(int[] values) { to public void append(int... values) {, we could invoke it like this:
vals.append( 84, 15, 102 );

2 Likes
7

Finally i get the difference between [] and … . I looked some Time ago for Hours, only to get told that they are both the Same… had to work with hashmaps in an old project to get that functionality…

8

The autocomplete in IntelliJ Idea told me…
Screenshot%20from%202018-10-23%2017-04-37 Screenshot%20from%202018-10-23%2017-04-13

9

AFAIK, variadic parameters exist in Java since version 5. :coffee:

IMO, it’s a huge oversight that Processing’s source code don’t use such ancient feature in as many places as possible! :eye:

Java is already version 11 now! :flushed:

1 Like