Processing 1.0 - Processing Discourse - Use the Value as a String name?

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Index › Programming Questions & Help › Syntax Questions › Use the Value as a String name

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Use the Value as a String name? (Read 391 times)

greg_rasputin

Use the Value as a String name?
Mar 3^rd, 2008, 4:29pm

Hello,

i a getting crazy on this, since i can't find an answer:

In a Array i have some sitting som string, and now i would like to turn every second of the entries to a single String, like this:

Array = {"One","Something","Two","Again something"};

And now i would like to have it like this:

String str(Array[0]) = Array[1];

That there is a Variable One which has the value "Something"
One = "Something";

What to do????

JohnG

Re: Use the Value as a String name?
Reply #1 - Mar 3^rd, 2008, 6:09pm

You can't do that in processing.
And, TBH, I don't see the use of having a variable name to a variable. Variable names are just identifiers, you shouldn't really be using the name of a variable as part of it's data.

For your example, you'd be much better off creating a small class, and then having an array of them. e.g.
Code:


class thing
{
  String name;
  String value;
  thing(String n, String v)
  {
    name=n;
    value=v;
  }
}

String[] foo={"One","Something","Two","Again something"};

thing[] things=new thing[0];
for(int i=0;i<foo.length;i+=2)
{
  things=(thing[])append(things,new thing(foo[i],foo[i+1]));
}

greg_rasputin

Re: Use the Value as a String name?
Reply #2 - Mar 3^rd, 2008, 6:31pm

Thanks,
but i guess that doesn't work.
See, i have a huge String from a file, which i have no rights to changes anything. And that string hast some Strings and some Numbers. The String always says, what the folowing numbers are. But the count is always different.

So i want to organize it that way, that i load the string and then have a singel Strings whose variable-names are the names from the huge string.

That might look like this:
"Numbers:2,6,3,8,5,8,4,1,2,3,5,7,9,6,44 More:3,4,9,2,4"
And should then be
int Numbers[] = {"2,6,3,8,5,8,4,1,2,3,5,7,9,6,44"};
int More = {"3,4,9,2,4"};

koogy

Re: Use the Value as a String name?
Reply #3 - Mar 4^th, 2008, 4:12pm

Split() splits a string into pieces.
http://processing.org/reference/split_.html

in your case you'll need to split on " " to get each substring then split each on ":" to get the name and value. use the name as hashmap key, the value as the value.

String input = "Numbers:2,6,3,8,5,8,4,1,2,3,5,7,9,6,44 More:3,4,9,2,4";
String nvpairs[] = split(input, " ");
HashMap hash = new HashMap();
for (int i = 0 ; i < nvpairs.length ; i++) {
String nameval[] = split(nvpairs[i], ":");
println("Name : " + nameval[0]);
println("Value: " + nameval[1]);
hash.put(nameval[0], nameval[1]);
}

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