Set (Foundation class)

From Axaptapedia

Set (Foundation class) consist of a data set that contains values of the same type, where value is unique.

A Set is alway sorted on the value.

Contents 1 How to use 1.1 Define 1.2 Insert a value 1.3 Exists value 1.4 Getting values 1.4.1 SetIterator 1.4.2 SetEnumerator 1.5 Removing values 1.6 Other methods 2 See also

[edit] How to use

[edit] Define

Set s = new Set(Types::STRING);

[edit] Insert a value

s.add("Wassini");
s.add("Eric");

[edit] Exists value

To see if a value already is added, use the in method:

if (s.in("Wassini"))
   print "Yes!";
else
   print "No!";

[edit] Getting values

There are several ways to get the values in the set.

1. Using a SetIterator
2. Using a SetEnumerator

[edit] SetIterator

The SetIterator loops throug the complete set:

SetIterator si;
 
si = new SetIterator(s);
 
while (si.more())
{
  print si.value();
 
  si.next();
}

[edit] SetEnumerator

SetEnumerator class is like SetIterator class, but with a slightly different interface

SetEnumerator se=s.getEnumerator();
 
while (se.moveNext())
{
  print se.current();
}

[edit] Removing values

Just use the remove method to remove the active value.

s.remove("Wassini");

[edit] Other methods

// Get number of elements:
print s.elements(); 
 
// Get the used types:
print s.definitionString(); 
 
// Dump the whole set as a string:
print s.toString();

[edit] See also

• Collection classes